else if (m_currentHdr.IsMgt () && m_currentHdr.IsAction ())

    {

      Ptr<Packet> packet = m_currentPacket->Copy ();

      WifiActionHeader actionHdr;

      packet->RemoveHeader (actionHdr);

      if (actionHdr.GetCategory () == WifiActionHeader::BLOCK_ACK)

        {

          switch (actionHdr.GetAction ().blockAck)

            {

            case WifiActionHeader::BLOCK_ACK_ADDBA_REQUEST:

              {

                MgtAddBaResponseHeader reqHdr;

                packet->RemoveHeader (reqHdr);

                return reqHdr.GetTid ();

              }

            case WifiActionHeader::BLOCK_ACK_ADDBA_RESPONSE:

              {

                MgtAddBaResponseHeader respHdr;

                packet->RemoveHeader (respHdr);

                return respHdr.GetTid ();

              }

            case WifiActionHeader::BLOCK_ACK_DELBA:

              {

                MgtDelBaHeader delHdr;

                packet->RemoveHeader (delHdr);

                return delHdr.GetTid ();

              }

            default:

              {

                NS_FATAL_ERROR ("Don't know how to extract Traffic ID from this BA action frame");

              }

            }

        }

      else

        {

          NS_FATAL_ERROR ("Don't know how to extract Traffic ID from this action frame");

        }

    }