diff --git a/model/ndn-app-link-service.cpp b/model/ndn-app-link-service.cpp
new file mode 100644
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+++ b/model/ndn-app-link-service.cpp
@@ -0,0 +1,97 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2011-2015  Regents of the University of California.
+ *
+ * This file is part of ndnSIM. See AUTHORS for complete list of ndnSIM authors and
+ * contributors.
+ *
+ * ndnSIM is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * ndnSIM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * ndnSIM, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+#include "ndn-app-link-service.hpp"
+
+#include "ns3/log.h"
+#include "ns3/packet.h"
+#include "ns3/node.h"
+#include "ns3/assert.h"
+#include "ns3/simulator.h"
+
+#include "apps/ndn-app.hpp"
+
+NS_LOG_COMPONENT_DEFINE("ndn.AppLinkService");
+
+namespace ns3 {
+namespace ndn {
+
+AppLinkService::AppLinkService(Ptr<App> app)
+  : m_node(app->GetNode())
+  , m_app(app)
+{
+  NS_LOG_FUNCTION(this << app);
+
+  NS_ASSERT(m_app != 0);
+}
+
+AppLinkService::~AppLinkService()
+{
+  NS_LOG_FUNCTION_NOARGS();
+}
+
+void
+AppLinkService::doSendInterest(const Interest& interest)
+{
+  NS_LOG_FUNCTION(this << &interest);
+
+  // to decouple callbacks
+  Simulator::ScheduleNow(&App::OnInterest, m_app, interest.shared_from_this());
+}
+
+void
+AppLinkService::doSendData(const Data& data)
+{
+  NS_LOG_FUNCTION(this << &data);
+
+  // to decouple callbacks
+  Simulator::ScheduleNow(&App::OnData, m_app, data.shared_from_this());
+}
+
+void
+AppLinkService::doSendNack(const lp::Nack& nack)
+{
+  NS_LOG_FUNCTION(this << &nack);
+
+  // to decouple callbacks
+  // Simulator::ScheduleNow(&App::OnNack, m_app, nack.shared_from_this());
+}
+
+//
+
+void
+AppLinkService::onReceiveInterest(const Interest& interest)
+{
+  this->receiveInterest(interest);
+}
+
+void
+AppLinkService::onReceiveData(const Data& data)
+{
+  this->receiveData(data);
+}
+
+void
+AppLinkService::onReceiveNack(const lp::Nack& nack)
+{
+  this->receiveNack(nack);
+}
+
+} // namespace ndn
+} // namespace ns3