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Added the check for non-NTN bands

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This commit is contained in:
Raghavendra Dinavahi
2025-10-30 16:53:07 +01:00
parent 69f391f2b8
commit 40fae6136c
4 changed files with 27 additions and 30 deletions
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common/utils/nr/nr_common.c
+20 -13
View File
@@ -459,7 +459,7 @@ bool compare_relative_ul_channel_bw(int nr_band, int scs, int channel_bandwidth,
return rel_bw > limit;
}
static bool check_delta_duplex(int index, uint64_t dlfreq_khz, uint64_t ulfreq_khz)
static bool check_delta_duplex(int index, uint64_t dlfreq_khz, uint64_t ulfreq_khz, int64_t dlbw, int64_t ulbw)
{
int uldl_min_offset = nr_bandtable[index].dl_min - nr_bandtable[index].ul_min;
int txrx_offset = dlfreq_khz - ulfreq_khz;
@@ -470,9 +470,6 @@ static bool check_delta_duplex(int index, uint64_t dlfreq_khz, uint64_t ulfreq_k
int band = nr_bandtable[index].band;
// TBD.. Delta duplex is also a range for these bands n26, n91-n94, n109.
// TBD .. Add the checks later
// Refer to section 5.4.4 in spec 38.101-5
if (band == 256 && txrx_offset >= 165000 && txrx_offset <= 215000)
return true;
@@ -481,16 +478,31 @@ static bool check_delta_duplex(int index, uint64_t dlfreq_khz, uint64_t ulfreq_k
if (band == 254 && txrx_offset >= 862000 && txrx_offset <= 885000)
return true;
// Refer to section 5.4.4 in spec 38.101-1 for these bands 24, 91-94, 109
if (band == 24 && (txrx_offset == -101500 || txrx_offset == -120500))
return true;
//Delta duplex is also a range for these bands n91-n94, n109.
if ((band >= 91 && band <= 94) || band == 109) {
dlbw = ((dlbw / 1000) + 1) * 1000;
ulbw = ((ulbw / 1000) + 1) * 1000;
int lower_limit = nr_bandtable[index].dl_min - nr_bandtable[index].ul_max + ((dlbw + ulbw) >> 1);
int upper_limit = nr_bandtable[index].dl_max - nr_bandtable[index].ul_min - ((dlbw + ulbw) >> 1);
LOG_I(NR_PHY, "Band %d dlbw:%ld Khz, ulbw: %ld Khz RXTX lower limit:%d khz, upper limit:%d khz\n",
band, dlbw, ulbw, lower_limit, upper_limit);
if (txrx_offset >= lower_limit && txrx_offset <= upper_limit)
return true;
}
return false;
}
uint16_t get_band(uint64_t downlink_frequency, int32_t delta_duplex)
uint16_t get_band(uint64_t downlink_frequency, int32_t delta_duplex, int64_t dlbw, int64_t ulbw)
{
const int64_t dl_freq_khz = downlink_frequency / 1000;
const int32_t delta_duplex_khz = delta_duplex / 1000;
const int64_t ul_freq_khz = dl_freq_khz + delta_duplex_khz;
uint64_t center_freq_diff_khz = UINT64_MAX; // 2^64
uint16_t current_band = 0;
for (int ind = 0; ind < sizeofArray(nr_bandtable); ind++) {
@@ -501,15 +513,10 @@ uint16_t get_band(uint64_t downlink_frequency, int32_t delta_duplex)
if (ul_freq_khz < nr_bandtable[ind].ul_min || ul_freq_khz > nr_bandtable[ind].ul_max)
continue;
if (!check_delta_duplex(ind, dl_freq_khz, ul_freq_khz))
if (!check_delta_duplex(ind, dl_freq_khz, ul_freq_khz, dlbw, ulbw))
continue;
int64_t center_frequency_khz = (nr_bandtable[ind].dl_max + nr_bandtable[ind].dl_min) / 2;
if (labs(dl_freq_khz - center_frequency_khz) < center_freq_diff_khz){
current_band = nr_bandtable[ind].band;
center_freq_diff_khz = labs(dl_freq_khz - center_frequency_khz);
}
current_band = nr_bandtable[ind].band;
}
printf("DL frequency %"PRIu64": band %d, UL frequency %"PRIu64"\n",
common/utils/nr/nr_common.h
+1 -1
View File
@@ -285,7 +285,7 @@ int get_coreset_num_cces(uint8_t *FreqDomainResource, int duration);
int get_nr_table_idx(int nr_bandP, uint8_t scs_index);
int32_t get_delta_duplex(int nr_bandP, uint8_t scs_index);
frame_type_t get_frame_type(uint16_t nr_bandP, uint8_t scs_index);
uint16_t get_band(uint64_t downlink_frequency, int32_t delta_duplex);
uint16_t get_band(uint64_t downlink_frequency, int32_t delta_duplex, int64_t dlbw, int64_t ulbw);
int NRRIV2BW(int locationAndBandwidth,int N_RB);
int NRRIV2PRBOFFSET(int locationAndBandwidth,int N_RB);
int PRBalloc_to_locationandbandwidth0(int NPRB,int RBstart,int BWPsize);