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change get_band() to take the duplex spacing into account

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This commit is contained in:
Thomas Schlichter
2021-03-03 18:02:10 +01:00
parent 7a6f789aed
commit 62612feebf
6 changed files with 63 additions and 82 deletions
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openair1/PHY/INIT/nr_init.c
+2 -10
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@@ -455,7 +455,6 @@ void nr_phy_config_request(NR_PHY_Config_t *phy_config) {
uint8_t short_sequence, num_sequences, rootSequenceIndex, fd_occasion;
NR_DL_FRAME_PARMS *fp = &RC.gNB[Mod_id]->frame_parms;
nfapi_nr_config_request_scf_t *gNB_config = &RC.gNB[Mod_id]->gNB_config;
int32_t dlul_offset = 0;
memcpy((void*)gNB_config,phy_config->cfg,sizeof(*phy_config->cfg));
RC.gNB[Mod_id]->mac_enabled = 1;
@@ -466,16 +465,9 @@ void nr_phy_config_request(NR_PHY_Config_t *phy_config) {
uint64_t ul_bw_khz = (12*gNB_config->carrier_config.ul_grid_size[gNB_config->ssb_config.scs_common.value].value)*(15<<gNB_config->ssb_config.scs_common.value);
fp->ul_CarrierFreq = ((ul_bw_khz>>1) + gNB_config->carrier_config.uplink_frequency.value)*1000 ;
//fp->nr_band = *RC.nrmac[Mod_id]->common_channels[0].ServingCellConfigCommon->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0];
lte_frame_type_t frame_type = 0; // FDD
get_band(fp->dl_CarrierFreq,&fp->nr_band,&dlul_offset,&frame_type); //RC.nrmac[Mod_id] cannot be accessed in NFAPI
int32_t dlul_offset = fp->ul_CarrierFreq - fp->dl_CarrierFreq;
fp->nr_band = get_band(fp->dl_CarrierFreq, dlul_offset);
get_delta_duplex(fp->nr_band, gNB_config->ssb_config.scs_common.value, &dlul_offset);
dlul_offset *= 1000;
AssertFatal(fp->ul_CarrierFreq == (fp->dl_CarrierFreq + dlul_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 + dlul_offset);
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);
fp->threequarter_fs = openair0_cfg[0].threequarter_fs;
openair1/PHY/INIT/nr_parms.c
+2 -3
View File
@@ -352,9 +352,8 @@ int nr_init_frame_parms_ue(NR_DL_FRAME_PARMS *fp,
fp->N_RB_UL = config->carrier_config.ul_grid_size[fp->numerology_index];
fp->N_RB_DL = config->carrier_config.dl_grid_size[fp->numerology_index];
int32_t uplink_frequency_offset = 0;
get_delta_duplex(fp->nr_band, fp->numerology_index, &uplink_frequency_offset);
get_frame_type(fp->nr_band, fp->numerology_index, &fp->frame_type);
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;
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);
openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.c
+53 -62
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@@ -1692,9 +1692,45 @@ int32_t table_6_4_1_1_3_4_pusch_dmrs_positions_l [12][8] = {
#define NR_BANDTABLE_SIZE (sizeof(nr_bandtable)/sizeof(nr_bandentry_t))
// Returns the corresponding row index of the NR table
int get_nr_table_idx(int nr_bandP, uint8_t scs_index){
uint16_t get_band(uint64_t downlink_frequency, int32_t delta_duplex)
{
const uint64_t dl_freq_khz = downlink_frequency / 1000;
const int32_t delta_duplex_khz = delta_duplex / 1000;
uint64_t center_freq_diff_khz = 999999999999999999; // 2^64
uint16_t current_band = 0;
for (int ind = 0; ind < NR_BANDTABLE_SIZE; ind++) {
LOG_D(PHY, "Scanning band %d, dl_min %"PRIu64", ul_min %"PRIu64"\n", nr_bandtable[ind].band, nr_bandtable[ind].dl_min, nr_bandtable[ind].ul_min);
if (dl_freq_khz < nr_bandtable[ind].dl_min || dl_freq_khz > nr_bandtable[ind].dl_max)
continue;
int32_t current_offset_khz = nr_bandtable[ind].ul_min - nr_bandtable[ind].dl_min;
if (current_offset_khz != delta_duplex_khz)
continue;
uint64_t center_frequency_khz = (nr_bandtable[ind].dl_max + nr_bandtable[ind].dl_min) / 2;
if (abs(dl_freq_khz - center_frequency_khz) < center_freq_diff_khz){
current_band = nr_bandtable[ind].band;
center_freq_diff_khz = abs(dl_freq_khz - center_frequency_khz);
}
}
LOG_I(PHY, "DL frequency %"PRIu64": band %d, UL frequency %"PRIu64"\n",
downlink_frequency, current_band, downlink_frequency+delta_duplex);
AssertFatal(current_band != 0, "Can't find EUTRA band for frequency %"PRIu64" and duplex_spacing %u\n", downlink_frequency, delta_duplex);
return current_band;
}
// Returns the corresponding row index of the NR table
int get_nr_table_idx(int nr_bandP, uint8_t scs_index)
{
int i, j;
int scs_khz = 15 << scs_index;
int supplementary_bands[] = {29,75,76,80,81,82,83,84,86,89,95};
@@ -1715,35 +1751,33 @@ int get_nr_table_idx(int nr_bandP, uint8_t scs_index){
LOG_D(PHY, "NR band table index %d (Band %d, dl_min %lu, ul_min %lu)\n", i, nr_bandtable[i].band, nr_bandtable[i].dl_min,nr_bandtable[i].ul_min);
return i;
}
// Computes the duplex spacing (either positive or negative) in KHz
void get_delta_duplex(int nr_bandP, uint8_t scs_index, int32_t *delta_duplex){
int32_t get_delta_duplex(int nr_bandP, uint8_t scs_index)
{
int nr_table_idx = get_nr_table_idx(nr_bandP, scs_index);
*delta_duplex = (nr_bandtable[nr_table_idx].ul_min - nr_bandtable[nr_table_idx].dl_min);
int32_t delta_duplex = (nr_bandtable[nr_table_idx].ul_min - nr_bandtable[nr_table_idx].dl_min);
LOG_D(PHY, "NR band duplex spacing is %d KHz (nr_bandtable[%d].band = %d)\n", *delta_duplex, nr_table_idx, nr_bandtable[nr_table_idx].band);
LOG_I(PHY, "NR band duplex spacing is %d KHz (nr_bandtable[%d].band = %d)\n", delta_duplex, nr_table_idx, nr_bandtable[nr_table_idx].band);
return delta_duplex;
}
void get_frame_type(uint16_t current_band,
uint8_t scs_index,
lte_frame_type_t *current_type){
lte_frame_type_t get_frame_type(uint16_t current_band, uint8_t scs_index)
{
lte_frame_type_t current_type;
int32_t delta_duplex = get_delta_duplex(current_band, scs_index);
int32_t current_offset;
get_delta_duplex(current_band, scs_index, &current_offset);
current_offset *= 1000;
if (current_offset == 0)
*current_type = TDD;
if (delta_duplex == 0)
current_type = TDD;
else
*current_type = FDD;
current_type = FDD;
LOG_I(MAC, "NR band %d, duplex mode %s, duplex spacing = %d KHz\n", current_band, duplex_mode[*current_type], current_offset);
LOG_I(MAC, "NR band %d, duplex mode %s, duplex spacing = %d KHz\n", current_band, duplex_mode[current_type], delta_duplex);
return current_type;
}
uint16_t config_bandwidth(int mu, int nb_rb, int nr_band)
@@ -1921,7 +1955,6 @@ uint64_t from_nrarfcn(int nr_bandP,
int deltaFglobal = 5;
uint32_t N_REF_Offs = 0;
uint64_t F_REF_Offs_khz = 0;
int32_t delta_duplex;
uint64_t N_OFFs, frequency, freq_min;
int i = get_nr_table_idx(nr_bandP, scs_index);
@@ -1936,7 +1969,7 @@ uint64_t from_nrarfcn(int nr_bandP,
F_REF_Offs_khz = 24250080;
}
get_delta_duplex(nr_bandP, scs_index, &delta_duplex);
int32_t delta_duplex = get_delta_duplex(nr_bandP, scs_index);
if (delta_duplex <= 0){ // DL band >= UL band
if (nrarfcn >= nr_bandtable[i].N_OFFs_DL){ // is TDD of FDD DL
@@ -3081,48 +3114,6 @@ bool set_dl_ptrs_values(NR_PTRS_DownlinkConfig_t *ptrs_config,
//printf("[MAC] PTRS is set K= %u L= %u\n", *K_ptrs,1<<*L_ptrs);
return valid;
}
void get_band(uint64_t downlink_frequency,
uint16_t *current_band,
int32_t *current_offset,
lte_frame_type_t *current_type)
{
int ind;
uint64_t center_frequency_khz;
uint64_t center_freq_diff_khz;
uint64_t dl_freq_khz = downlink_frequency/1000;
center_freq_diff_khz = 999999999999999999; // 2^64
*current_band = 0;
for ( ind=0;
ind < sizeof(nr_bandtable) / sizeof(nr_bandtable[0]);
ind++) {
LOG_I(PHY, "Scanning band %d, dl_min %"PRIu64", ul_min %"PRIu64"\n", nr_bandtable[ind].band, nr_bandtable[ind].dl_min,nr_bandtable[ind].ul_min);
if ( nr_bandtable[ind].dl_min <= dl_freq_khz && nr_bandtable[ind].dl_max >= dl_freq_khz ) {
center_frequency_khz = (nr_bandtable[ind].dl_max + nr_bandtable[ind].dl_min)/2;
if (abs(dl_freq_khz - center_frequency_khz) < center_freq_diff_khz){
*current_band = nr_bandtable[ind].band;
*current_offset = (nr_bandtable[ind].ul_min - nr_bandtable[ind].dl_min)*1000;
center_freq_diff_khz = abs(dl_freq_khz - center_frequency_khz);
if (*current_offset == 0)
*current_type = TDD;
else
*current_type = FDD;
}
}
}
LOG_I( PHY, "DL frequency %"PRIu64": band %d, frame_type %d, UL frequency %"PRIu64"\n",
downlink_frequency, *current_band, *current_type, downlink_frequency+*current_offset);
AssertFatal(*current_band != 0,
"Can't find EUTRA band for frequency %lu\n", downlink_frequency);
}
uint32_t get_ssb_slot(uint32_t ssb_index){
// this function now only support f <= 3GHz
openair2/LAYER2/NR_MAC_COMMON/nr_mac_common.h
+4 -3
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@@ -39,9 +39,11 @@
uint16_t config_bandwidth(int mu, int nb_rb, int nr_band);
void get_frame_type(uint16_t nr_bandP, uint8_t scs_index, lte_frame_type_t *current_type);
uint16_t get_band(uint64_t downlink_frequency, int32_t delta_duplex);
void get_delta_duplex(int nr_bandP, uint8_t scs_index, int32_t *delta_duplex);
lte_frame_type_t get_frame_type(uint16_t nr_bandP, uint8_t scs_index);
int32_t get_delta_duplex(int nr_bandP, uint8_t scs_index);
uint64_t from_nrarfcn(int nr_bandP, uint8_t scs_index, uint32_t dl_nrarfcn);
@@ -140,7 +142,6 @@ bool set_dl_ptrs_values(NR_PTRS_DownlinkConfig_t *ptrs_config,
uint8_t *K_ptrs, uint8_t *L_ptrs,uint8_t *portIndex,
uint8_t *nERatio,uint8_t *reOffset,
uint8_t NrOfSymbols);
void get_band(uint64_t downlink_frequency, uint16_t *current_band, int32_t *current_offset, lte_frame_type_t *current_type);
uint8_t get_num_dmrs_symbols(NR_PDSCH_Config_t *pdsch_Config,int dmrs_TypeA_Position,int NrOfSymbols);
openair2/LAYER2/NR_MAC_UE/config_ue.c
+1 -2
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@@ -203,8 +203,7 @@ void config_common_ue(NR_UE_MAC_INST_t *mac,
uint32_t band = *scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0];
frequency_range_t frequency_range = band<100?FR1:FR2;
lte_frame_type_t frame_type;
get_frame_type(*scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0], *scc->ssbSubcarrierSpacing, &frame_type);
lte_frame_type_t frame_type = get_frame_type(*scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0], *scc->ssbSubcarrierSpacing);
// cell config
openair2/LAYER2/NR_MAC_gNB/config.c
+1 -2
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@@ -127,8 +127,7 @@ void config_common(int Mod_idP, int pdsch_AntennaPorts, NR_ServingCellConfigComm
uint32_t band = *scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0];
frequency_range_t frequency_range = band<100?FR1:FR2;
lte_frame_type_t frame_type;
get_frame_type(*scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0], *scc->ssbSubcarrierSpacing, &frame_type);
lte_frame_type_t frame_type = get_frame_type(*scc->downlinkConfigCommon->frequencyInfoDL->frequencyBandList.list.array[0], *scc->ssbSubcarrierSpacing);
RC.nrmac[Mod_idP]->common_channels[0].frame_type = frame_type;
// Cell configuration