ue,phy: always reset HARQ buffer for RAR

srsue/src/phy/nr/cc_worker.cc

@@ -238,6 +238,11 @@ bool cc_worker::decode_pdsch_dl()
   mac_dl_grant.tti                                     = dl_slot_cfg.idx;
   phy.stack->new_grant_dl(0, mac_dl_grant, &dl_action);
 
+  // check if RA-RNTI, if true reset HARQ buffers
+  if (pdsch_cfg.grant.rnti_type == srsran_rnti_type_ra && dl_action.tb.softbuffer != nullptr) {
+    srsran_softbuffer_rx_reset(dl_action.tb.softbuffer);
+  }
+
   // Abort if MAC says it doesn't need the TB
   if (not dl_action.tb.enabled) {
     // Force positive ACK