--- a/src/lte/model/lte-rlc-um.cc	Thu Apr 19 17:43:47 2012 +0200
+++ b/src/lte/model/lte-rlc-um.cc	Mon Apr 23 13:16:03 2012 +0200
@@ -98,7 +98,7 @@
  */
 
 void
-LteRlcUm::DoNotifyTxOpportunity (uint32_t bytes)
+LteRlcUm::DoNotifyTxOpportunity (uint32_t bytes, uint8_t layer)
 {
   NS_LOG_FUNCTION (this << m_rnti << (uint32_t) m_lcid << bytes);
 
@@ -354,6 +354,7 @@
   params.pdu = packet;
   params.rnti = m_rnti;
   params.lcid = m_lcid;
+  params.layer = layer;
 
   m_macSapProvider->TransmitPdu (params);