From 376e835e6516708727bd42943ec9806219e7c493 Mon Sep 17 00:00:00 2001
From: Piotr Gawlowicz <piotr@srs.io>
Date: Sat, 25 Nov 2023 00:50:32 +0100
Subject: [PATCH] ue,phy: always reset HARQ buffer for RAR

---
 srsue/src/phy/nr/cc_worker.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/srsue/src/phy/nr/cc_worker.cc b/srsue/src/phy/nr/cc_worker.cc
index eda91f5d5..a44e34552 100644
--- a/srsue/src/phy/nr/cc_worker.cc
+++ b/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