Commit 2411743f authored by Thomas Schlichter's avatar Thomas Schlichter 🇩🇪
Browse files

gNB: move get_band() to its only user in nr_init.c

parent 62612fee
......@@ -45,10 +45,42 @@
#include "PHY/NR_REFSIG/ul_ref_seq_nr.h"
/*
extern uint32_t from_nrarfcn(int nr_bandP,uint32_t dl_nrarfcn);
extern openair0_config_t openair0_cfg[MAX_CARDS];
*/
static
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;
}
int l1_north_init_gNB() {
......
......@@ -1649,6 +1649,8 @@ nr_bandentry_t nr_bandtable[] = {
{261,27500040,28350000,27500040,28350000, 2,2070833, 120}
};
#define NR_BANDTABLE_SIZE (sizeof(nr_bandtable)/sizeof(nr_bandentry_t))
const size_t nr_bandtable_size = NR_BANDTABLE_SIZE;
// TS 38.211 Table 6.4.1.1.3-3: PUSCH DMRS positions l' within a slot for single-symbol DMRS and intra-slot frequency hopping disabled.
// The first 4 colomns are PUSCH mapping type A and the last 4 colomns are PUSCH mapping type B.
......@@ -1690,44 +1692,6 @@ int32_t table_6_4_1_1_3_4_pusch_dmrs_positions_l [12][8] = {
{1, 1025, -1, -1, 1, 513, -1, -1}, //14 // (DMRS l' position)
};
#define NR_BANDTABLE_SIZE (sizeof(nr_bandtable)/sizeof(nr_bandentry_t))
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)
{
......
......@@ -36,10 +36,12 @@
#include "NR_CellGroupConfig.h"
#include "nr_mac.h"
#include "openair1/PHY/impl_defs_nr.h"
#include "openair1/PHY/defs_nr_common.h"
uint16_t config_bandwidth(int mu, int nb_rb, int nr_band);
extern const size_t nr_bandtable_size;
extern nr_bandentry_t nr_bandtable[];
uint16_t get_band(uint64_t downlink_frequency, int32_t delta_duplex);
uint16_t config_bandwidth(int mu, int nb_rb, int nr_band);
lte_frame_type_t get_frame_type(uint16_t nr_bandP, uint8_t scs_index);
......
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