--- a/src/lte/model/lte-rlc-am.cc	Mon Jan 30 13:18:50 2012 +0100
+++ b/src/lte/model/lte-rlc-am.cc	Thu Mar 22 18:16:01 2012 +0100
@@ -162,7 +162,7 @@
  */
 
 void
-LteRlcAm::DoNotifyTxOpportunity (uint32_t bytes)
+LteRlcAm::DoNotifyTxOpportunity (uint32_t bytes, uint8_t layer)
 {
   NS_LOG_FUNCTION (this << bytes);
   NS_ASSERT_MSG (bytes > 2, "Tx opportunity too small = " << bytes);
@@ -472,6 +472,7 @@
   params.pdu = packet;
   params.rnti = m_rnti;
   params.lcid = m_lcid;
+  params.layer = layer;
 
   m_macSapProvider->TransmitPdu (params);
 }