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This commit is contained in:
francescomani
2023-06-08 14:56:14 +02:00
parent 5480522a5c
commit ce7d6cc3fb
2 changed files with 31 additions and 23 deletions
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common/utils/nr/nr_common.h
+8
View File
@@ -59,6 +59,14 @@ typedef struct nr_bandentry_s {
uint8_t deltaf_raster;
} nr_bandentry_t;
typedef struct {
int band;
int scs_index;
int first_gscn;
int step_gscn;
int last_gscn;
} sync_raster_t;
typedef enum frequency_range_e {
FR1 = 0,
FR2
openair2/GNB_APP/gnb_config.c
+23 -23
View File
@@ -94,10 +94,10 @@
extern uint16_t sf_ahead;
int macrlc_has_f1 = 0;
// synchronization raster per band tables
// synchronization raster per band tables (Rel.15)
// (38.101-1 Table 5.4.3.3-1 and 38.101-2 Table 5.4.3.3-1)
// band nb, sub-carrier spacing index, Range of GSCN (First, Step size, Last)
const uint32_t sync_raster[37][5] = {
// band nb, sub-carrier spacing index, Range of gscn (First, Step size, Last)
const sync_raster_t sync_raster[] = {
{1, 0, 5279, 1, 5419},
{2, 0, 4829, 1, 4969},
{3, 0, 4517, 1, 4693},
@@ -1119,51 +1119,51 @@ void config_security(gNB_RRC_INST *rrc)
// Section 5.4.3 of 38.101-1 and -2
void check_ssb_raster(uint64_t freq, int band, int scs)
{
int start_GSCN = 0, step_GSCN = 0, end_GSCN = 0;
for (int i = 0; i < sizeof(sync_raster) / 20; i++) {
if (sync_raster[i][0] == band &&
sync_raster[i][1] == scs) {
start_GSCN = sync_raster[i][2];
step_GSCN = sync_raster[i][3];
end_GSCN = sync_raster[i][4];
int start_gscn = 0, step_gscn = 0, end_gscn = 0;
for (int i = 0; i < sizeof(sync_raster) / sizeof(sync_raster_t); i++) {
if (sync_raster[i].band == band &&
sync_raster[i].scs_index == scs) {
start_gscn = sync_raster[i].first_gscn;
step_gscn = sync_raster[i].step_gscn;
end_gscn = sync_raster[i].last_gscn;
break;
}
}
AssertFatal(start_GSCN != 0, "Couldn't find band %d with SCS %d\n", band, scs);
int GSCN;
if (freq <= 3000000000) {
AssertFatal(start_gscn != 0, "Couldn't find band %d with SCS %d\n", band, scs);
int gscn;
if (freq < 3000000000) {
int N = 0;
int M = 0;
for (int k = 0; k < 3; k++) {
M = (k << 1) + 1;
if ((freq - M * 50000) % 1200000) {
if ((freq - M * 50000) % 1200000 == 0) {
N = (freq - M * 50000) / 1200000;
break;
}
}
AssertFatal(N != 0, "SSB frequency %lu Hz not on the synchronization raster (N * 1200kHz + M * 50 kHz)\n",
freq);
GSCN = (3 * N) + (M - 3) / 2;
gscn = (3 * N) + (M - 3) / 2;
}
else if (freq <= 24250000000) {
else if (freq < 24250000000) {
AssertFatal((freq - 3000000000) % 1440000 == 0,
"SSB frequency %lu Hz not on the synchronization raster (3000 MHz + N * 1.44 MHz)\n",
freq);
GSCN = ((freq - 3000000000) / 1440000) + 7499;
gscn = ((freq - 3000000000) / 1440000) + 7499;
}
else {
AssertFatal((freq - 24250080000) % 17280000 == 0,
"SSB frequency %lu Hz not on the synchronization raster (24250.08 MHz + N * 17.28 MHz)\n",
freq);
GSCN = ((freq - 24250080000) / 17280000) + 22256;
gscn = ((freq - 24250080000) / 17280000) + 22256;
}
AssertFatal(GSCN >= start_GSCN && GSCN <= end_GSCN,
AssertFatal(gscn >= start_gscn && gscn <= end_gscn,
"GSCN %d corresponding to SSB frequency %lu does not belong to GSCN range for band %d\n",
GSCN, freq, band);
int rel_GSCN = GSCN - start_GSCN;
AssertFatal(rel_GSCN % step_GSCN == 0,
gscn, freq, band);
int rel_gscn = gscn - start_gscn;
AssertFatal(rel_gscn % step_gscn == 0,
"GSCN %d corresponding to SSB freqyency %lu not in accordance with GSCN step for band %d\n",
GSCN, freq, band);
gscn, freq, band);
}
void RCconfig_NRRRC(MessageDef *msg_p, uint32_t i, gNB_RRC_INST *rrc)