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rfsimulator: for LEO NTN, update SIB19 information once for each frame

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This commit is contained in:
Thomas Schlichter
2025-06-20 11:24:06 +00:00
parent e91fb33da3
commit 786f4877bc
1 changed files with 6 additions and 4 deletions
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radio/rfsimulator/apply_channelmod.c
+6 -4
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@@ -129,12 +129,14 @@ void rxAddInput(const c16_t *input_sig,
LOG_I(HW, "Satellite orbit: time %f s, Position = (%f, %f, %f), Velocity = (%f, %f, %f)\n", t, pos_sat_x, pos_sat_y, pos_sat_z, vel_sat_x, vel_sat_y, vel_sat_z);
LOG_I(HW, "Uplink delay %f ms, Doppler shift UE->SAT %f kHz\n", prop_delay * 1000, f_Doppler_shift_ue_sat / 1000);
LOG_I(HW, "Satellite velocity towards gNB: %f m/s, acceleration towards gNB: %f m/s²\n", vel_sat_gnb, acc_sat_gnb);
}
const int samples_per_subframe = channelDesc->sampling_rate / 1000;
const int abs_subframe = TS / samples_per_subframe;
const int samples_per_subframe = channelDesc->sampling_rate / 1000;
const int abs_subframe = TS / samples_per_subframe;
if (abs_subframe % 10 == 0) { // update SIB19 information for the next frame
gnb_sat_position_update_t sat_position = {
.sfn = (abs_subframe / 10) % 1024,
.subframe = abs_subframe % 10,
.sfn = (abs_subframe / 10 + 1) % 1024,
.subframe = 0,
.delay = 2 * dist_sat_gnb / (c * 4.072e-9),
.drift = 2 * -vel_sat_gnb / (c * 0.2e-9),
.accel = 2 * acc_sat_gnb / (c * 0.2e-10),