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TDD fixes in real-time environment

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This commit is contained in:
Khalid Ahmed
2019-10-08 09:30:14 +02:00
committed by Thomas Schlichter
parent c7951965e7
commit dd0927dd55
7 changed files with 331 additions and 26 deletions
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openair2/LAYER2/NR_MAC_gNB/nr_mac_common.c
+25 -13
View File
@@ -75,30 +75,42 @@ void get_band(uint32_t downlink_frequency,
lte_frame_type_t *current_type)
{
int ind;
int64_t dl_freq_khz = downlink_frequency/1000;
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++) {
*current_band = nr_bandtable[ind].band;
LOG_I(PHY, "Scanning band %d, dl_min %"PRIu64", ul_min %"PRIu64"\n", ind, nr_bandtable[ind].dl_min,nr_bandtable[ind].ul_min);
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 ) {
*current_offset = (nr_bandtable[ind].ul_min - nr_bandtable[ind].dl_min)*1000;
if (*current_offset == 0)
*current_type = TDD;
else
*current_type = FDD;
LOG_I( PHY, "DL frequency %"PRIu32": band %d, frame_type %d, UL frequency %"PRIu32"\n",
downlink_frequency, *current_band, *current_type, downlink_frequency+*current_offset);
break;
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;
}
}
}
AssertFatal(ind != (sizeof(nr_bandtable) / sizeof(nr_bandtable[0])),
"Can't find EUTRA band for frequency %d\n", downlink_frequency);
LOG_I( PHY, "DL frequency %"PRIu32": band %d, frame_type %d, UL frequency %"PRIu32"\n",
downlink_frequency, *current_band, *current_type, downlink_frequency+*current_offset);
AssertFatal(*current_band != 0,
"Can't find EUTRA band for frequency %u\n", downlink_frequency);
}
uint32_t to_nrarfcn(int nr_bandP,