handle tx_offset with negative value

dd26598a · Khalid Ahmed · Thomas Schlichter · bd392619 · dd26598a
Commit dd26598a authored Jul 08, 2019 by Khalid Ahmed Committed by Thomas Schlichter Oct 08, 2019
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openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c +4 -0

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--- a/openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c
+++ b/openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c
@@ -401,6 +401,10 @@ uint8_t nr_ue_pusch_common_procedures(PHY_VARS_NR_UE *UE,
 #endif

  tx_offset = slot*frame_parms->samples_per_slot - timing_advance;
+
+  if (tx_offset < 0)
+    tx_offset += frame_parms->samples_per_frame;
+
  txdata = UE->common_vars.txdata;
  txdataF = UE->common_vars.txdataF;