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fix(nr_dlsch): symbol offset calculation

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There was an indexing error in the calculation of the symbol offset `re_beginning_of_symbol`.
The symbol was tested to hold PTRS or DMRS based on the index of the
first symbol processed in the task and not based on the index of the
symbol as it should be.
Then PDSCH generation was not working properly for more than one symbol
per task.
This commit is contained in:
Romain Beurdouche
2026-02-05 10:33:13 +00:00
parent bad2ae874e
commit b875f855c7
1 changed files with 4 additions and 4 deletions
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8
openair1/PHY/NR_TRANSPORT/nr_dlsch.c
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@@ -743,12 +743,12 @@ static int do_one_dlsch(unsigned char *input_ptr, PHY_VARS_gNB *gNB, NR_gNB_DLSC
rdata->dlPtrsSymPos = dlPtrsSymPos;
rdata->n_ptrs = n_ptrs;
rdata->beam_nb = beam_nb;
for (int s = 0; s < rdata->numSymbols; s++) {
rdata->re_beginning_of_symbol[l_symbol + s] = re_beginning_of_symbol;
for (int s = l_symbol; s < l_symbol + rdata->numSymbols; s++) {
rdata->re_beginning_of_symbol[s] = re_beginning_of_symbol;
re_beginning_of_symbol += rel15->rbSize * NR_NB_SC_PER_RB;
if (n_ptrs > 0 && is_ptrs_symbol(l_symbol, dlPtrsSymPos)) {
if (n_ptrs > 0 && is_ptrs_symbol(s, dlPtrsSymPos)) {
re_beginning_of_symbol -= n_ptrs;
} else if (rel15->dlDmrsSymbPos & (1 << l_symbol)) {
} else if (rel15->dlDmrsSymbPos & (1 << s)) {
re_beginning_of_symbol -= n_dmrs;
}
}