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Unified Diff: src/woss/model/woss-channel.cc

Issue 14677043: UAN-WOSS framework
Patch Set: Bug fixes thanks to Randall and Raul, new features added as per WOSS 1.5.0 Created 7 years, 4 months ago
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Index: src/woss/model/woss-channel.cc
===================================================================
new file mode 100644
--- /dev/null
+++ b/src/woss/model/woss-channel.cc
@@ -0,0 +1,238 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2015 Federico Guerra
+ *
+ * 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: Federico Guerra <federico@guerra-tlc.com>
+ */
+
+#ifdef NS3_WOSS_SUPPORT
+
+#include "ns3/object.h"
+#include "ns3/packet.h"
+#include "ns3/simulator.h"
+#include "ns3/mobility-model.h"
+#include "ns3/net-device.h"
+#include "ns3/node.h"
+#include "ns3/log.h"
+#include "ns3/pointer.h"
+#include "ns3/log.h"
+#include "ns3/double.h"
+
+#include "woss-channel.h"
+#include "woss-prop-model.h"
+#include "ns3/uan-phy.h"
+#include "ns3/uan-prop-model.h"
+#include "ns3/uan-tx-mode.h"
+#include "ns3/uan-net-device.h"
+#include "ns3/uan-transducer.h"
+#include "ns3/uan-noise-model-default.h"
+#include "ns3/uan-prop-model-thorp.h"
+
+
+#define WOSS_CHANNEL_SNR_EQ_THRES_DB (-100.0)
+
+namespace ns3 {
+
+NS_LOG_COMPONENT_DEFINE ("WossChannel");
+
+NS_OBJECT_ENSURE_REGISTERED (WossChannel);
+
+TypeId
+WossChannel::GetTypeId ()
+{
+ static TypeId tid = TypeId ("ns3::WossChannel")
+ .SetParent<UanChannel> ()
+ .SetGroupName ("Woss")
+ .AddConstructor<WossChannel> ()
+ .AddAttribute ("ChannelEqSnrThresholdDb",
+ "The first channel tap that gives a SNR (dB) greater than the threshold will be used as delay.",
+ DoubleValue (WOSS_CHANNEL_SNR_EQ_THRES_DB),
+ MakeDoubleAccessor (&WossChannel::m_channelEqSnrThresDb),
+ MakeDoubleChecker<double> () )
+ ;
+
+ return tid;
+}
+
+WossChannel::WossChannel ()
+ : UanChannel (),
+ m_channelEqSnrThresDb (WOSS_CHANNEL_SNR_EQ_THRES_DB),
+ // -infinite snr ==> first tap
+ m_wossPropModel (NULL)
+{
+}
+
+WossChannel::~WossChannel ()
+{
+}
+
+
+void
+WossChannel::DoInitialize (void)
+{
+ NS_LOG_FUNCTION (this);
+
+ m_wossPropModel = DynamicCast< WossPropModel > ( m_prop );
+
+ NS_ASSERT ( m_wossPropModel != NULL );
+
+ UanChannel::DoInitialize ();
+}
+
+
+void
+WossChannel::TxPacket (Ptr<UanTransducer> src, Ptr<Packet> packet,
+ double txPowerDb, UanTxMode txMode)
+{
+ NS_LOG_FUNCTION (this);
+
+ Ptr<MobilityModel> senderMobility = 0;
+ Ptr<MobilityModel> tempRxMobility = 0;
+ WossPropModel::MobModelVector rxMobVector;
+ WossPropModel::UanPdpVector uanPdpVector;
+
+ double noisePwrDb = GetNoiseDbHz ( (double) txMode.GetCenterFreqHz () / 1000.0) + 10 * log10 (txMode.GetBandwidthHz ());
+ double chAttThresDb = txPowerDb - m_channelEqSnrThresDb - noisePwrDb;
+
+ NS_LOG_DEBUG ("noisePwrDb:" << noisePwrDb << "dB; chAttThresDb:"
+ << chAttThresDb << "dB; m_channelEqSnrThresDb:" << m_channelEqSnrThresDb << "dB");
+
+ NS_LOG_DEBUG ("Channel scheduling");
+
+ for (UanDeviceList::const_iterator i = m_devList.begin (); i != m_devList.end (); i++)
+ {
+ tempRxMobility = i->first->GetNode ()->GetObject<MobilityModel> ();
+
+ NS_ASSERT (tempRxMobility != 0);
+
+ NS_LOG_DEBUG ("src ptr:" << PeekPointer (src) << "; i->second:" << PeekPointer (i->second));
+
+ if (src != i->second)
+ {
+ rxMobVector.push_back (tempRxMobility);
+ }
+ else
+ {
+ senderMobility = tempRxMobility;
+ }
+ }
+
+ NS_LOG_DEBUG ("rxMobVector.size ():" << rxMobVector.size ());
+
+ uanPdpVector = m_wossPropModel->GetPdpVector (senderMobility, rxMobVector, txMode);
+
+ NS_LOG_DEBUG ("uanPdpVector.size ():" << uanPdpVector.size ()
+ << "; m_devList.size ():" << m_devList.size ());
+
+ uint32_t k = 0;
+ WossPropModel::UanPdpVector::iterator j = uanPdpVector.begin ();
+ for ( UanDeviceList::const_iterator i = m_devList.begin (); i != m_devList.end (); ++i, ++k)
+ {
+ if (src != i->second)
+ {
+ double rxPowerDb = -HUGE_VAL;
+ double totalAttCh = 0.0;
+ double totalAttChdB = HUGE_VAL;
+ bool delayFound = false;
+
+ NS_LOG_DEBUG ("src:" << src << "; dst:" << i->second
+ << "; UanPdp size:" << j->GetNTaps ());
+
+ UanPdp::Iterator it = j->GetBegin ();
+
+ Time delay = it->GetDelay ();
+
+ if ( chAttThresDb < 0.0 )
+ {
+ chAttThresDb = 0.0;
+ }
+
+ for (int tapCnt = 0; it != j->GetEnd (); ++it, ++tapCnt)
+ {
+ double attChDb = -20.0 * ::std::log10 (::std::abs (it->GetAmp ()));
+
+ if ( (attChDb < 0.0) || (attChDb <= chAttThresDb) )
+ {
+ NS_LOG_DEBUG ("tap:" << tapCnt << "; attenuation below threshold, attChDb:" << attChDb << "dB" );
+
+ if ( delayFound == false )
+ {
+ delay = it->GetDelay ();
+ delayFound = true;
+
+ NS_LOG_DEBUG ("found delay:" << delay);
+ }
+ }
+
+ // we found first usable tap
+ if (delayFound == true)
+ {
+ totalAttCh += ::std::pow (::std::abs (it->GetAmp ()), 2.0);
+
+ NS_LOG_DEBUG ("summing tap:" << tapCnt << "; totalAttCh:" << totalAttCh);
+ }
+ }
+
+ if (delayFound == true)
+ {
+ totalAttCh = ::std::sqrt (totalAttCh);
+ totalAttChdB = -20.0 * ::std::log10 (totalAttCh);
+
+ rxPowerDb = txPowerDb - totalAttChdB;
+
+ NS_LOG_DEBUG ("totalAttCh:" << totalAttCh << "; totalAttChdB:" << totalAttChdB
+ << "dB; rxPowerDb:" << rxPowerDb << "dB");
+
+ }
+
+ // else rxPowerDb is -infinite and rx is not possible
+
+ uint32_t dstNodeId = i->first->GetNode ()->GetId ();
+ Ptr<Packet> copy = packet->Copy ();
+
+ Ptr<MobilityModel> rcvrMobility = i->first->GetNode ()->GetObject<MobilityModel> ();
+ double pathLossDb = m_prop->GetPathLossDb (senderMobility, rcvrMobility, txMode);
+
+ NS_LOG_DEBUG ("dstNodeId = " << dstNodeId << ", txPowerDb=" << txPowerDb << "dB, pathLossDb="
+ << pathLossDb << "dB, rxPowerDb1="
+ << rxPowerDb << "dB, rxPowerDb2=" << (txPowerDb - pathLossDb) << "dB, delay=" << delay);
+
+ UanPdp normalizedPdp = j->NormalizeToSumNc ();
+
+ Simulator::ScheduleWithContext (dstNodeId, delay,
+ &WossChannel::SendUp,
+ this,
+ k,
+ copy,
+ rxPowerDb,
+ txMode,
+// (*j));
+ normalizedPdp);
+
+ if ( j != uanPdpVector.end () )
+ {
+ ++j;
+ }
+ }
+ }
+}
+
+
+} // namespace ns3
+
+#endif /* NS3_WOSS_SUPPORT */
+
+
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