Ptr<LteHexGridEnbTopologyHelper> lteHexGridEnbTopologyHelper = CreateObject<LteHexGridEnbTopologyHelper> ();
lteHexGridEnbTopologyHelper->SetLteHelper (lteHelper);
lteHexGridEnbTopologyHelper->SetAttribute ("InterSiteDistance", DoubleValue (500));
lteHexGridEnbTopologyHelper->SetAttribute ("MinX", DoubleValue (0));
lteHexGridEnbTopologyHelper->SetAttribute ("MinY", DoubleValue (0));
lteHexGridEnbTopologyHelper->SetAttribute ("GridWidth", UintegerValue (1));
lteHexGridEnbTopologyHelper->SetAttribute ("SectorOffset", DoubleValue (200));
lteHelper->SetEnbAntennaModelType ("ns3::IsotropicAntennaModel");
NetDeviceContainer enbDevs = lteHexGridEnbTopologyHelper->SetPositionAndInstallEnbDevice (enbNodesAll);