src/devices/wifi/yans-wifi-channel.cc
author Pavel Boyko <boyko@iitp.ru>
Tue, 16 Jun 2009 17:58:16 +0400
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parent 4940 0a8ef0ff2423
child 5102 0bb1dd1c301d
permissions -rw-r--r--
merged with nsnam
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/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
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/*
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 * Copyright (c) 2006,2007 INRIA
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License version 2 as 
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 * published by the Free Software Foundation;
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
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 * Author: Mathieu Lacage, <mathieu.lacage@sophia.inria.fr>
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 */
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#include "ns3/packet.h"
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#include "ns3/simulator.h"
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#include "ns3/mobility-model.h"
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#include "ns3/net-device.h"
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#include "ns3/node.h"
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#include "ns3/log.h"
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#include "ns3/pointer.h"
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#include "ns3/object-factory.h"
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#include "yans-wifi-channel.h"
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#include "yans-wifi-phy.h"
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#include "propagation-loss-model.h"
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#include "propagation-delay-model.h"
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NS_LOG_COMPONENT_DEFINE ("YansWifiChannel");
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namespace ns3 {
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TypeId 
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YansWifiChannel::GetTypeId (void)
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{
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  static TypeId tid = TypeId ("ns3::YansWifiChannel")
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    .SetParent<WifiChannel> ()
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    .AddConstructor<YansWifiChannel> ()
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    .AddAttribute ("PropagationLossModel", "A pointer to the propagation loss model attached to this channel.",
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                   PointerValue (),
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                   MakePointerAccessor (&YansWifiChannel::m_loss),
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                   MakePointerChecker<PropagationLossModel> ())
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    .AddAttribute ("PropagationDelayModel", "A pointer to the propagation delay model attached to this channel.",
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                   PointerValue (),
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                   MakePointerAccessor (&YansWifiChannel::m_delay),
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                   MakePointerChecker<PropagationDelayModel> ())
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    ;
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  return tid;
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}
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YansWifiChannel::YansWifiChannel ()
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{}
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YansWifiChannel::~YansWifiChannel ()
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{
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  m_phyList.clear ();
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}
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void 
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YansWifiChannel::SetPropagationLossModel (Ptr<PropagationLossModel> loss)
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{
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  m_loss = loss;
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}
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void 
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YansWifiChannel::SetPropagationDelayModel (Ptr<PropagationDelayModel> delay)
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{
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  m_delay = delay;
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}
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void 
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YansWifiChannel::Send (Ptr<YansWifiPhy> sender, Ptr<const Packet> packet, double txPowerDbm,
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                       WifiMode wifiMode, WifiPreamble preamble) const
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{
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  NS_LOG_DEBUG ("I am on channel "  << sender->GetFrequencyChannel()
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                << " : sending " << packet->GetUid ());
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  Ptr<MobilityModel> senderMobility = sender->GetMobility ()->GetObject<MobilityModel> ();
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  NS_ASSERT (senderMobility != 0);
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  uint32_t j = 0;
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  for (PhyList::const_iterator i = m_phyList.begin (); i != m_phyList.end (); i++, j++)
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    { 
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      if (sender != (*i))
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        {
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          // For now don't account for interchannel interference
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          if ((*i)->GetFrequencyChannel() != sender->GetFrequencyChannel())
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            {
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              NS_LOG_DEBUG ("Dropped: " << (*i)->GetFrequencyChannel() 
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                            << " != " << sender->GetFrequencyChannel() );
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              continue;
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            }
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          NS_LOG_DEBUG ("Passed to receiver");
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          Ptr<MobilityModel> receiverMobility = (*i)->GetMobility ()->GetObject<MobilityModel> ();
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          Time delay = m_delay->GetDelay (senderMobility, receiverMobility);
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          double rxPowerDbm = m_loss->CalcRxPower (txPowerDbm, senderMobility, receiverMobility);
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          NS_LOG_DEBUG ("propagation: txPower="<<txPowerDbm<<"dbm, rxPower="<<rxPowerDbm<<"dbm, "<<
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                        "distance="<<senderMobility->GetDistanceFrom (receiverMobility)<<"m, delay="<<delay);
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          Ptr<Packet> copy = packet->Copy ();
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          Simulator::Schedule (delay, &YansWifiChannel::Receive, this, 
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                               j, copy, rxPowerDbm, wifiMode, preamble);
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        }
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    }
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}
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void
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YansWifiChannel::Receive (uint32_t i, Ptr<Packet> packet, double rxPowerDbm,
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                          WifiMode txMode, WifiPreamble preamble) const
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{
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  m_phyList[i]->StartReceivePacket (packet, rxPowerDbm, txMode, preamble);
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}
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uint32_t 
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YansWifiChannel::GetNDevices (void) const
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{
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  return m_phyList.size ();
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}
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Ptr<NetDevice> 
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YansWifiChannel::GetDevice (uint32_t i) const
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{
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  return m_phyList[i]->GetDevice ()->GetObject<NetDevice> ();
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}
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void 
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YansWifiChannel::Add (Ptr<YansWifiPhy> phy)
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{
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  m_phyList.push_back (phy);
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}
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} // namespace ns3