diff --git a/model/batches.cc b/model/batches.cc
new file mode 100644
index 0000000..1dbccfa
--- /dev/null
+++ b/model/batches.cc
@@ -0,0 +1,57 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2011,2012 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#include "ns3/batches.h"
+
+namespace ns3 {
+
+ATTRIBUTE_HELPER_CPP (Batches);
+
+std::ostream &
+operator << (std::ostream &os, const Batches &batch)
+{
+  for (Batches::const_iterator i = batch.begin (); i != batch.end (); i++)
+    os << i->get<0> () << " " << i->get<1> () << " ";
+
+  return os;
+}
+
+/**
+ * \brief Read components from input and add them to components. Will read input stream till eof
+ * Substrings separated by slashes will become separate components
+ */
+std::istream &
+operator >> (std::istream &is, Batches &batch)
+{
+  Time time;
+  uint32_t amount;
+  while (!is.eof ())
+    {
+      is >> time >> amount;
+      batch.Add (time, amount);
+      // std::cout << time << ", " << amount << ". \n";
+    }
+  
+  is.clear ();
+  return is;
+}
+
+
+}
diff --git a/model/batches.h b/model/batches.h
new file mode 100644
index 0000000..d481a47
--- /dev/null
+++ b/model/batches.h
@@ -0,0 +1,58 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2011,2012 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#ifndef _BATCHES_H_
+#define _BATCHES_H_
+
+#include "ns3/attribute.h"
+#include "ns3/attribute-helper.h"
+#include "ns3/nstime.h"
+#include <list>
+#include <boost/tuple/tuple.hpp>
+
+namespace ns3 {
+
+class Batches : public std::list<boost::tuple<Time, uint32_t> >
+{
+public:
+  Batches () { };
+
+  void
+  Add (const Time &when, uint32_t amount)
+  {
+    push_back (boost::make_tuple<Time, uint32_t> (when, amount));
+  }
+};
+
+ATTRIBUTE_HELPER_HEADER (Batches);
+
+std::ostream &
+operator << (std::ostream &os, const Batches &batch);
+
+/**
+ * \brief Read components from input and add them to components. Will read input stream till eof
+ * Substrings separated by slashes will become separate components
+ */
+std::istream &
+operator >> (std::istream &is, Batches &batch);
+
+} // namespace ns3
+
+#endif // _BATCHES_H_