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improvement in setting ssb parameters

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This commit is contained in:
francescomani
2021-09-14 12:42:10 +02:00
parent aa308ab262
commit 9eb813b02b
1 changed files with 63 additions and 10 deletions
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openair1/PHY/INIT/nr_parms.c
+63 -10
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@@ -28,6 +28,58 @@
uint32_t nr_subcarrier_spacing[MAX_NUM_SUBCARRIER_SPACING] = {15e3, 30e3, 60e3, 120e3, 240e3};
uint16_t nr_slots_per_subframe[MAX_NUM_SUBCARRIER_SPACING] = {1, 2, 4, 8, 16};
// Table 5.4.3.3-1 38-101
int nr_ssb_table[48][3] = {
{1, 15, nr_ssb_type_A},
{2, 15, nr_ssb_type_A},
{3, 15, nr_ssb_type_A},
{5, 15, nr_ssb_type_A},
{5, 30, nr_ssb_type_B},
{7, 15, nr_ssb_type_A},
{8, 15, nr_ssb_type_A},
{12, 15, nr_ssb_type_A},
{14, 15, nr_ssb_type_A},
{18, 15, nr_ssb_type_A},
{20, 15, nr_ssb_type_A},
{25, 15, nr_ssb_type_A},
{26, 15, nr_ssb_type_A},
{28, 15, nr_ssb_type_A},
{29, 15, nr_ssb_type_A},
{30, 15, nr_ssb_type_A},
{34, 15, nr_ssb_type_A},
{34, 30, nr_ssb_type_C},
{38, 15, nr_ssb_type_A},
{38, 30, nr_ssb_type_C},
{39, 15, nr_ssb_type_A},
{39, 30, nr_ssb_type_C},
{40, 30, nr_ssb_type_C},
{41, 15, nr_ssb_type_A},
{41, 30, nr_ssb_type_C},
{46, 30, nr_ssb_type_C},
{48, 30, nr_ssb_type_C},
{50, 30, nr_ssb_type_C},
{51, 15, nr_ssb_type_A},
{53, 15, nr_ssb_type_A},
{65, 15, nr_ssb_type_A},
{66, 15, nr_ssb_type_A},
{66, 30, nr_ssb_type_B},
{70, 15, nr_ssb_type_A},
{71, 15, nr_ssb_type_A},
{74, 15, nr_ssb_type_A},
{75, 15, nr_ssb_type_A},
{76, 15, nr_ssb_type_A},
{77, 30, nr_ssb_type_C},
{78, 30, nr_ssb_type_C},
{79, 30, nr_ssb_type_C},
{90, 15, nr_ssb_type_A},
{90, 30, nr_ssb_type_C},
{91, 15, nr_ssb_type_A},
{92, 15, nr_ssb_type_A},
{93, 15, nr_ssb_type_A},
{94, 15, nr_ssb_type_A},
{96, 30, nr_ssb_type_C}
};
void set_Lmax(NR_DL_FRAME_PARMS *fp) {
// definition of Lmax according to ts 38.213 section 4.1
@@ -86,27 +138,28 @@ int nr_get_ssb_start_symbol(NR_DL_FRAME_PARMS *fp,uint8_t i_ssb) {
void set_scs_parameters (NR_DL_FRAME_PARMS *fp, int mu, int N_RB_DL)
{
int idx = 0;
switch(mu) {
case NR_MU_0: //15kHz scs
fp->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_0];
fp->slots_per_subframe = nr_slots_per_subframe[NR_MU_0];
fp->ssb_type = nr_ssb_type_A;
while(nr_ssb_table[idx][0]!=fp->nr_band)
idx++;
AssertFatal(nr_ssb_table[idx][1]==15,"SCS %d not applicable to band %d\n",
fp->subcarrier_spacing,fp->nr_band);
break;
case NR_MU_1: //30kHz scs
fp->subcarrier_spacing = nr_subcarrier_spacing[NR_MU_1];
fp->slots_per_subframe = nr_slots_per_subframe[NR_MU_1];
// selection of SS block pattern according to TS 38101-1 Table 5.4.3.3-1 for SCS 30kHz
if (fp->nr_band == 5 || fp->nr_band == 66)
fp->ssb_type = nr_ssb_type_B;
else{
if (fp->nr_band == 41 || ( fp->nr_band > 76 && fp->nr_band < 80) )
fp->ssb_type = nr_ssb_type_C;
else
AssertFatal(1==0,"NR Operating Band n%d not available for SS block SCS with mu=%d\n", fp->nr_band, mu);
while(nr_ssb_table[idx][0]!=fp->nr_band ||
nr_ssb_table[idx][1]!=30) {
AssertFatal(nr_ssb_table[idx][0]<=fp->nr_band,"SCS %d not applicable to band %d\n",
fp->subcarrier_spacing,fp->nr_band);
idx++;
}
fp->ssb_type = nr_ssb_table[idx][2];
break;
case NR_MU_2: //60kHz scs