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Merge remote-tracking branch 'origin/srs-freq-shift-fix' into integration_2025_w48 (!3759)

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NR UE: fix bug for SRS generation when freqDomainShift (n_shift) is not 0

According to TS 38.211 section 6.4.1.4.3, the frequency domain shift value
n_shift is from higher-layer parameter freqDomainShift. The quantity n_RRC
is given by higher-layer parameter freqDomainPosition. Also corrected
k_0_overbar_p calculation formula to align with standard.
This commit is contained in:
Jaroslava Fiedlerova
2025-11-24 22:24:56 +01:00
parent 8943975eb3 19301afcb1
commit 95affc2a41
2 changed files with 3 additions and 3 deletions
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openair1/PHY/nr_phy_common/src/nr_phy_common_srs.c
+1 -1
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@@ -293,7 +293,7 @@ bool generate_srs_nr(const NR_DL_FRAME_PARMS *frame_parms,
}
uint8_t k_l_offset = 0; // If the SRS is configured by the IE SRS-PosResource-r16, the quantity k_l_offset is
// given by TS 38.211 - Table 6.4.1.4.3-2, otherwise k_l_offset = 0.
uint8_t k_0_overbar_p = (nr_srs_info->n_shift * NR_NB_SC_PER_RB + (K_TC_p + k_l_offset)) % K_TC;
uint8_t k_0_overbar_p = nr_srs_info->n_shift * NR_NB_SC_PER_RB + (K_TC_p + k_l_offset) % K_TC;
uint8_t k_0_p = k_0_overbar_p + K_TC * M_sc_b_SRS * sum_n_b;
nr_srs_info->k_0_p[p_index][l_line] = k_0_p;