From b0135201332c7c8eccfcdc1c3f8014a3868bdccb Mon Sep 17 00:00:00 2001
From: Vignesh Babu <ns3-dev@esk.fraunhofer.de>
Date: Mon, 18 Mar 2019 11:38:45 +0100
Subject: [PATCH] lte: Add method to flush DL HARQ buffer

---
 src/lte/model/lte-harq-phy.cc | 16 ++++++++++++++++
 src/lte/model/lte-harq-phy.h  |  7 +++++++
 2 files changed, 23 insertions(+)

diff --git a/src/lte/model/lte-harq-phy.cc b/src/lte/model/lte-harq-phy.cc
index a939a526f..a54067f09 100644
--- a/src/lte/model/lte-harq-phy.cc
+++ b/src/lte/model/lte-harq-phy.cc
@@ -216,6 +216,22 @@ LteHarqPhy::ResetUlHarqProcessStatus (uint16_t rnti, uint8_t id)
     }
 }
 
+void
+LteHarqPhy::ClearDlHarqBuffer (uint16_t rnti)
+{
+  NS_LOG_FUNCTION (this << rnti);
+  // flush the DL harq buffers
+  m_miDlHarqProcessesInfoMap.clear ();
+  // Recreate DL Decodification HARQ buffers
+  std::vector<HarqProcessInfoList_t> dlHarqLayer0;
+  dlHarqLayer0.resize (8);
+  std::vector<HarqProcessInfoList_t> dlHarqLayer1;
+  dlHarqLayer1.resize (8);
+  m_miDlHarqProcessesInfoMap.push_back (dlHarqLayer0);
+  m_miDlHarqProcessesInfoMap.push_back (dlHarqLayer1);
+}
+
+
 
 
 
diff --git a/src/lte/model/lte-harq-phy.h b/src/lte/model/lte-harq-phy.h
index 3e430cb0e..57393af68 100644
--- a/src/lte/model/lte-harq-phy.h
+++ b/src/lte/model/lte-harq-phy.h
@@ -137,6 +137,13 @@ public:
   */
   void ResetUlHarqProcessStatus(uint16_t rnti, uint8_t id);
   
+  /**
+   * \brief Clear the downlink HARQ buffer
+   *
+   * \param rnti the RNTI of the UE
+   */
+  void ClearDlHarqBuffer (uint16_t rnti);
+