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EEBTProtocol.cc
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EEBTProtocol.cc
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/*
* SimpleBroadcastProtocol.cc
*
* Created on: 02.06.2020
* Author: krassus
*/
#include <math.h>
#include "ns3/EEBTPTag.h"
#include "SeqNoCache.h"
#include "SendEvent.h"
#include "AD_SendEvent.h"
#include "CC_SendEvent.h"
#include "EEBTProtocol.h"
#include "EEBTPDataHeader.h"
#include "EEBTPQueueDiscItem.h"
#include "CustomWifiTxCurrentModel.h"
#include "float.h"
#include "ns3/nstime.h"
#include "ns3/mac-low.h"
#include "ns3/log.h"
#include "ns3/wifi-utils.h"
#include "ns3/integer.h"
#include "ns3/callback.h"
#include "ns3/core-module.h"
#include "ns3/wifi-mac.h"
#include "ns3/wifi-phy.h"
#include "ns3/llc-snap-header.h"
#include "ns3/mobility-module.h"
#include "ns3/fifo-queue-disc.h"
#include "ns3/traffic-control-helper.h"
namespace ns3
{
NS_LOG_COMPONENT_DEFINE("EEBTProtocol");
NS_OBJECT_ENSURE_REGISTERED(EEBTProtocol);
const uint16_t EEBTProtocol::PROT_NUMBER = 153;
const uint32_t EEBTProtocol::MAX_UNCHANGED_ROUNDS = 10;
EEBTProtocol::EEBTProtocol()
{
this->sendCounter = 0;
this->maxPackets = 1000;
this->dataLength = 1000;
this->ndInterval = 0;
this->cache = SeqNoCache();
this->maxAllowedTxPower = 23;
}
EEBTProtocol::~EEBTProtocol()
{
this->cache.~SeqNoCache();
this->cycleWatchDog->~CycleWatchDog();
this->cycleWatchDog = 0;
this->games.clear();
this->packetManager->~EEBTPPacketManager();
this->packetManager = 0;
}
TypeId EEBTProtocol::GetTypeId()
{
static TypeId tid = TypeId("ns3::EEBTPProtocol").SetParent<Object>().AddConstructor<EEBTProtocol>();
return tid;
}
TypeId EEBTProtocol::GetInstanceTypeId() const
{
return GetTypeId();
}
std::ostream &operator<<(std::ostream &os, EEBTProtocol &prot)
{
prot.Print(os);
return os;
}
void EEBTProtocol::Print(std::ostream &os) const
{
Ptr<GameState> gs;
uint64_t gid = 0;
bool found = false;
for (uint i = 0; i < this->games.size(); i++)
{
gs = this->games[i];
if (gs->getGameID() == gid)
{
found = true;
break;
}
}
os << "<===================== Node " << this->device->GetNode()->GetId() << " =====================>\n";
if (!found)
{
os << "NO INFORMATION AVAILABLE\n";
return;
}
else
gs->findHighestTxPowers();
Vector pos = this->device->GetNode()->GetObject<MobilityModel>()->GetPosition();
os << "MAC ADDR:\t\t" << this->myAddress << "\n";
os << "POSITION:\t\tX " << pos.x << ", Y " << pos.y << "\n";
os << "TX POWER:\t\t" << gs->getHighestTxPower() << "dBm\n";
os << "FINISH TIME:\t" << gs->getTimeFinished() << "\n";
Ptr<EEBTPNode> parent = gs->getParent();
if (parent != 0)
os << "PARENT:\t\t\t" << parent->getAddress() << "\n";
else
os << "PARENT:\t\t\tff:ff:ff:ff:ff:ff\n";
os << "\n";
os << "FINISHED:\t\t" << (gs->gameFinished() ? "TRUE" : "FALSE") << "\n";
os << "WAITING FOR:\t";
if (gs->allChildsFinished())
os << "NONE";
else
{
for (int i = 0; i < gs->getNChilds(); i++)
{
os << "\n";
Ptr<EEBTPNode> child = gs->getChild(i);
if (!child->hasFinished())
os << "\t" << child->getAddress();
}
}
os << "\n\n";
os << "LOCKED:\t\t" << (gs->isLocked() ? "TRUE" : "FALSE") << "\n";
os << "LOCKED BY:\t" << (gs->isLocked() ? gs->getLockedBy() : Mac48Address::GetBroadcast()) << "\n";
os << "\n";
os << "HIGHEST TX POWER:\t\t\t" << gs->getHighestTxPower() << "\n";
os << "SECOND HIGHEST TX POWER:\t" << gs->getSecondHighestTxPower() << "\n";
os << "\n";
os << "APP DATA PACKETS:\t\t\t" << this->maxPackets << "\n";
os << "MISSING APP DATA PACKETS:\t" << (this->maxPackets - gs->getApplicationDataHandler()->getPacketCount()) << "\n";
os << "\n";
os << "CYCLES DURING CONSTRUCTION PHASE:\n";
int numCyc = 0;
std::vector<Ptr<CycleInfo>> cycles = this->cycleWatchDog->getCycles(gid, this->device->GetNode()->GetId());
for (Ptr<CycleInfo> ci : cycles)
{
if (ci->isRealCycle())
{
numCyc++;
os << "\t\tTIME: start = " << ci->getStartTime() << ", end = " << ci->getEndTime() << ", duration = " << ci->getDuration() << " | ";
ci->Print(os);
os << "\n";
}
}
os << "TOTAL NUMBER OF CYCLES:\t" << numCyc << "\n";
os << "\n";
os << "MY CHILD NODES:\n";
for (int i = 0; i < gs->getNChilds(); i++)
{
Ptr<EEBTPNode> child = gs->getChild(i);
os << "\tNODE " << child->getAddress() << " => " << child->getReachPower() << "dBm | " << child->getNoise() << "dBm\n";
}
os << "\n";
os << "REACH POWER FOR NODES:\n";
for (uint i = 0; i < gs->getNNeighbors(); i++)
{
Ptr<EEBTPNode> neighbor = gs->getNeighbor(i);
os << "\tNODE " << neighbor->getAddress() << " => " << neighbor->getReachPower() << "dBm | " << neighbor->getNoise() << "dBm\n";
os << "\t\thTx = " << neighbor->getHighestMaxTxPower() << "dBm\n";
os << "\t\tshTx = " << neighbor->getSecondHighestMaxTxPower() << "dBm\n";
}
os << "\n";
os << "ENERGY BY FRAME TYPE:\tRECV | SENT\n";
os << "\tCYCLE_CHECK:\t\t" << this->packetManager->getEnergyByRecvFrame(gid, 0) << "J | " << this->packetManager->getEnergyBySentFrame(gid, 0) << "J\n";
os << "\tNEIGHBOR_DISCOVERY:\t" << this->packetManager->getEnergyByRecvFrame(gid, 1) << "J | " << this->packetManager->getEnergyBySentFrame(gid, 1) << "J\n";
os << "\tCHILD_REQUEST:\t\t" << this->packetManager->getEnergyByRecvFrame(gid, 2) << "J | " << this->packetManager->getEnergyBySentFrame(gid, 2) << "J\n";
os << "\tCHILD_CONFIRMATION:\t" << this->packetManager->getEnergyByRecvFrame(gid, 3) << "J | " << this->packetManager->getEnergyBySentFrame(gid, 3) << "J\n";
os << "\tCHILD_REJECTION:\t" << this->packetManager->getEnergyByRecvFrame(gid, 4) << "J | " << this->packetManager->getEnergyBySentFrame(gid, 4) << "J\n";
os << "\tPARENT_REVOCATION:\t" << this->packetManager->getEnergyByRecvFrame(gid, 5) << "J | " << this->packetManager->getEnergyBySentFrame(gid, 5) << "J\n";
os << "\tEND_OF_GAME:\t\t" << this->packetManager->getEnergyByRecvFrame(gid, 6) << "J | " << this->packetManager->getEnergyBySentFrame(gid, 6) << "J\n";
os << "\tAPPLICATION_DATA:\t" << this->packetManager->getEnergyByRecvFrame(gid, 7) << "J | " << this->packetManager->getEnergyBySentFrame(gid, 7) << "J\n";
os << "TOTAL ENERGY:\t\t\t" << this->packetManager->getTotalEnergyConsumed(gid) << "J\n\n";
uint32_t allFrameTypesSent = 0;
for (int i = 0; i < 8; i++)
allFrameTypesSent += this->packetManager->getFrameTypeSent(gid, i);
os << "DATA SENT BY FRAME TYPE:\tCOUNT\t | DATA\n";
os << "\tCYCLE_CHECK:\t\t\t" << this->packetManager->getFrameTypeSent(gid, 0) << "\t | " << this->packetManager->getDataSentByFrame(gid, 0) << "B\n";
os << "\tNEIGHBOR_DISCOVERY:\t\t" << this->packetManager->getFrameTypeSent(gid, 1) << "\t | " << this->packetManager->getDataSentByFrame(gid, 1) << "B\n";
os << "\tCHILD_REQUEST:\t\t\t" << this->packetManager->getFrameTypeSent(gid, 2) << "\t | " << this->packetManager->getDataSentByFrame(gid, 2) << "B\n";
os << "\tCHILD_CONFIRMATION:\t\t" << this->packetManager->getFrameTypeSent(gid, 3) << "\t | " << this->packetManager->getDataSentByFrame(gid, 3) << "B\n";
os << "\tCHILD_REJECTION:\t\t" << this->packetManager->getFrameTypeSent(gid, 4) << "\t | " << this->packetManager->getDataSentByFrame(gid, 4) << "B\n";
os << "\tPARENT_REVOCATION:\t\t" << this->packetManager->getFrameTypeSent(gid, 5) << "\t | " << this->packetManager->getDataSentByFrame(gid, 5) << "B\n";
os << "\tEND_OF_GAME:\t\t\t" << this->packetManager->getFrameTypeSent(gid, 6) << "\t | " << this->packetManager->getDataSentByFrame(gid, 6) << "B\n";
os << "\tAPPLICATION_DATA:\t\t" << this->packetManager->getFrameTypeSent(gid, 7) << "\t | " << this->packetManager->getDataSentByFrame(gid, 7) << "B\n";
os << "DATA SENT TOTAL:\t\t\t" << allFrameTypesSent << "\t | " << this->packetManager->getDataSent(gid) << "B\n\n";
uint32_t allFrameTypesRecv = 0;
for (int i = 0; i < 8; i++)
allFrameTypesRecv += this->packetManager->getFrameTypeRecv(gid, i);
os << "DATA RECEIVED BY FRAME TYPE:\tCOUNT\t | DATA\n";
os << "\tCYCLE_CHECK:\t\t\t" << this->packetManager->getFrameTypeRecv(gid, 0) << "\t | " << this->packetManager->getDataRecvByFrame(gid, 0) << "B\n";
os << "\tNEIGHBOR_DISCOVERY:\t\t" << this->packetManager->getFrameTypeRecv(gid, 1) << "\t | " << this->packetManager->getDataRecvByFrame(gid, 1) << "B\n";
os << "\tCHILD_REQUEST:\t\t\t" << this->packetManager->getFrameTypeRecv(gid, 2) << "\t | " << this->packetManager->getDataRecvByFrame(gid, 2) << "B\n";
os << "\tCHILD_CONFIRMATION:\t\t" << this->packetManager->getFrameTypeRecv(gid, 3) << "\t | " << this->packetManager->getDataRecvByFrame(gid, 3) << "B\n";
os << "\tCHILD_REJECTION:\t\t" << this->packetManager->getFrameTypeRecv(gid, 4) << "\t | " << this->packetManager->getDataRecvByFrame(gid, 4) << "B\n";
os << "\tPARENT_REVOCATION:\t\t" << this->packetManager->getFrameTypeRecv(gid, 5) << "\t | " << this->packetManager->getDataRecvByFrame(gid, 5) << "B\n";
os << "\tEND_OF_GAME:\t\t\t" << this->packetManager->getFrameTypeRecv(gid, 6) << "\t | " << this->packetManager->getDataRecvByFrame(gid, 6) << "B\n";
os << "\tAPPLICATION_DATA:\t\t" << this->packetManager->getFrameTypeRecv(gid, 7) << "\t | " << this->packetManager->getDataRecvByFrame(gid, 7) << "B\n";
os << "DATA RECEIVED TOTAL:\t\t\t" << allFrameTypesRecv << "\t | " << this->packetManager->getDataRecv(gid) << "B\n";
os << "<==================================================>\n";
}
/*
* Statistics Getter
*/
double EEBTProtocol::getEnergyByFrameType(uint64_t gid, FRAME_TYPE ft)
{
double energy = 0;
energy += this->packetManager->getEnergyByRecvFrame(gid, ft);
energy += this->packetManager->getEnergyBySentFrame(gid, ft);
return energy;
}
double EEBTProtocol::getEnergyForConstruction(uint64_t gid)
{
double energy = 0;
for (uint8_t i = 0; i < 7; i++)
{
energy += this->packetManager->getEnergyByRecvFrame(gid, i);
energy += this->packetManager->getEnergyBySentFrame(gid, i);
}
return energy;
}
double EEBTProtocol::getEnergyForApplicationData(uint64_t gid)
{
double energy = 0;
//energy += this->packetManager->getEnergyByRecvFrame(gid, 7);
energy += this->packetManager->getEnergyBySentFrame(gid, 7);
return energy;
}
Ptr<CycleWatchDog> EEBTProtocol::getCycleWatchDog()
{
return this->cycleWatchDog;
}
Ptr<EEBTPPacketManager> EEBTProtocol::getPacketManager()
{
return this->packetManager;
}
Ptr<NetDevice> EEBTProtocol::GetDevice()
{
return this->device;
}
/*
* This method searches for the GameState with the gameID `gid`
* If there is no such GameState, it creates a new one and stores
* it in the games list
*/
Ptr<GameState> EEBTProtocol::getGameState(uint64_t gid)
{
for (uint i = 0; i < this->games.size(); i++)
{
Ptr<GameState> gs = this->games[i];
if (gs->getGameID() == gid)
return gs;
}
Ptr<GameState> gs = Create<GameState>(false, gid);
gs->setMyAddress(this->myAddress);
this->games.push_back(gs);
return this->games[this->games.size() - 1];
}
Ptr<GameState> EEBTProtocol::initGameState(uint64_t gid)
{
for (uint i = 0; i < this->games.size(); i++)
{
Ptr<GameState> gs = this->games[i];
if (gs->getGameID() == gid)
return gs;
}
Ptr<GameState> gs = Create<GameState>(true, gid);
gs->setMyAddress(this->myAddress);
this->games.push_back(gs);
return this->games[this->games.size() - 1];
}
void EEBTProtocol::removeGameState(uint64_t gid)
{
uint i = 0;
for (; i < this->games.size(); i++)
{
if (this->games[i]->getGameID() == gid)
break;
}
if (i < this->games.size())
games.erase(this->games.begin() + i, this->games.begin() + (i + 1));
}
/*
* Install method to install this protocol on the stack of a node
*/
void EEBTProtocol::Install(Ptr<WifiNetDevice> netDevice, Ptr<CycleWatchDog> cwd)
{
this->device = netDevice;
this->cycleWatchDog = cwd;
this->random = CreateObject<UniformRandomVariable>();
this->wifiPhy = this->device->GetMac()->GetWifiPhy();
this->myAddress = Mac48Address::ConvertFrom(this->device->GetAddress());
//Set the number of power levels to one to ensure the node sends with a constant power
this->wifiPhy->SetNTxPower(1);
//Set the max allowed transmission power according to the selected standard
switch (this->wifiPhy->GetStandard())
{
case WIFI_PHY_STANDARD_80211a:
case WIFI_PHY_STANDARD_80211n_5GHZ:
this->maxAllowedTxPower = 23.0;
break;
case WIFI_PHY_STANDARD_80211b:
case WIFI_PHY_STANDARD_80211g:
case WIFI_PHY_STANDARD_80211n_2_4GHZ:
default:
this->maxAllowedTxPower = 20.0;
break;
}
this->wifiPhy->SetTxPowerEnd(this->maxAllowedTxPower);
this->wifiPhy->SetTxPowerStart(this->maxAllowedTxPower);
//Register a callback for incoming packets to read the rxPower, SNR and noise levels
this->packetManager = Create<EEBTPPacketManager>();
this->packetManager->setDevice(this->device);
this->wifiPhy->TraceConnectWithoutContext("PhyRxBegin", MakeCallback(&EEBTPPacketManager::onRxStart, this->packetManager));
this->wifiPhy->TraceConnectWithoutContext("PhyRxEnd", MakeCallback(&EEBTPPacketManager::onRxEnd, this->packetManager));
this->wifiPhy->TraceConnectWithoutContext("PhyTxBegin", MakeCallback(&EEBTPPacketManager::onTxStart, this->packetManager));
this->wifiPhy->TraceConnectWithoutContext("PhyTxDrop", MakeCallback(&EEBTPPacketManager::onTxDrop, this->packetManager));
this->wifiPhy->TraceConnectWithoutContext("PhyTxEnd", MakeCallback(&EEBTPPacketManager::onTxEnd, this->packetManager));
this->wifiPhy->TraceConnectWithoutContext("MonitorSnifferRx", MakeCallback(&EEBTPPacketManager::onPacketRx, this->packetManager));
this->wifiPhy->TraceConnectWithoutContext("MonitorSnifferTx", MakeCallback(&EEBTPPacketManager::onPacketTx, this->packetManager));
this->device->GetMac()->TraceConnectWithoutContext("TxOkHeader", MakeCallback(&EEBTPPacketManager::onTxSuccessful, this->packetManager));
this->device->GetMac()->TraceConnectWithoutContext("MacTxDrop", MakeCallback(&EEBTPPacketManager::onTxDropped, this->packetManager));
this->device->GetMac()->TraceConnectWithoutContext("MacTx", MakeCallback(&EEBTPPacketManager::onTx, this->packetManager));
this->device->GetMac()->TraceConnectWithoutContext("TxErrHeader", MakeCallback(&EEBTPPacketManager::onTxFailed, this->packetManager));
this->device->GetMac()->GetWifiRemoteStationManager()->TraceConnectWithoutContext("MacTxFinalRtsFailed", MakeCallback(&EEBTPPacketManager::onTxFinalRtsFailed, this->packetManager));
this->device->GetMac()->GetWifiRemoteStationManager()->TraceConnectWithoutContext("MacTxFinalDataFailed", MakeCallback(&EEBTPPacketManager::onTxFinalDataFailed, this->packetManager));
this->ndInterval = this->device->GetMac()->GetSlot().GetMicroSeconds() * 2000;
TrafficControlHelper tch = TrafficControlHelper();
tch.Install(this->device);
this->tcl = this->device->GetNode()->GetObject<TrafficControlLayer>();
this->device->GetNode()->RegisterProtocolHandler(MakeCallback(&TrafficControlLayer::Receive, this->tcl), EEBTProtocol::PROT_NUMBER, this->device);
this->tcl->RegisterProtocolHandler(MakeCallback(&EEBTProtocol::Receive, this), EEBTProtocol::PROT_NUMBER, this->device);
//this->device->GetNode()->RegisterProtocolHandler(MakeCallback(&EEBTProtocol::Receive, this), EEBTProtocol::PROT_NUMBER, this->device);
}
/*
* TxPower calculation
* Calculates the required transmission power to reach a given node (reachPower)
* rxPower (dBm)
* txPower (dBm)
* noise (dBm)
* minSNR (dB)
*/
double EEBTProtocol::calculateTxPower(double rxPower, double txPower, double noise, double minSNR)
{
double snr = rxPower - noise;
double neededPower = (txPower - (snr - minSNR));
if (neededPower <= this->maxAllowedTxPower)
neededPower = std::min(neededPower + 5, this->maxAllowedTxPower);
//NS_LOG_DEBUG("rxPower = " << rxPower << "dBm, txPower = " << txPower << "dBm, noise = " << noise << "dBm, SNR = " << (rxPower - noise) << "dB, minSNR = " << minSNR << "dB, neededPower = " << neededPower);
return neededPower;
}
/*
* Receive method
* Every packet with the protocol ID 'PROT_NUMBER' will be redirected to this method
* This methods takes
* - device: the NetDevice on which the packet arrived
* - packet: the actual Packet
* - pID: the protocol ID
* - sender: the sender of this packet
* - receiver: the receiver of this packet
* - ptype: the type of this packet
*/
void EEBTProtocol::Receive(Ptr<NetDevice> device, Ptr<const Packet> packet, uint16_t pID, const Address &sender, const Address &receiver, NetDevice::PacketType pType)
{
EEBTPTag tag;
EEBTPHeader header;
Ptr<WifiNetDevice> dev = DynamicCast<WifiNetDevice>(device);
Mac48Address sender_addr = Mac48Address::ConvertFrom(sender);
Mac48Address receiver_addr = Mac48Address::ConvertFrom(receiver);
//Get packet header
packet->PeekHeader(header);
//Get packet tag
tag = this->packetManager->getPacketTag(header.GetSequenceNumber());
NS_LOG_DEBUG("[Node " << dev->GetNode()->GetId() << " / " << Now() << "]: [" << this->myAddress << "] received packet from " << sender_addr << " / SeqNo: " << header.GetSequenceNumber() << " / FRAME_TYPE: " << (int)header.GetFrameType() << " / txPower: " << header.GetTxPower() << "dBm / noise: " << tag.getNoise() << "dBm");
NS_LOG_DEBUG("\thTx: " << header.GetHighestMaxTxPower() << ", shTx: " << header.GetSecondHighestMaxTxPower());
//Check for duplicated sequence number
if (this->cache.checkForDuplicate(sender_addr, header.GetSequenceNumber()))
{
NS_LOG_DEBUG("Received duplicated frame from '" << sender_addr << "' with GID " << header.GetGameId() << " and SeqNo " << header.GetSequenceNumber());
return;
}
//Get the GameState
Ptr<GameState> gs = this->getGameState(header.GetGameId());
//Update frame type seq no
if (gs->checkLastFrameType(sender_addr, header.GetFrameType(), header.GetSequenceNumber()))
gs->updateLastFrameType(sender_addr, header.GetFrameType(), header.GetSequenceNumber());
else if (header.GetFrameType() != CYCLE_CHECK)
{
NS_LOG_DEBUG("\tReceived a frame with the same type and a higher sequence number earlier. Ignoring this packet");
return;
}
//Update frame type seq no
gs->updateLastFrameType(sender_addr, header.GetFrameType(), header.GetSequenceNumber());
//Check if node is in our neighbor list
if (!gs->isNeighbor(sender_addr))
gs->addNeighbor(sender_addr);
//Get the EEBTPNode
Ptr<EEBTPNode> node = gs->getNeighbor(sender_addr);
if (header.GetFrameType() != APPLICATION_DATA)
{
node->setParentAddress(header.GetParent());
node->setReachPower(this->calculateTxPower(tag.getSignal(), header.GetTxPower(), tag.getNoise(), tag.getMinSNR()));
node->updateRxInfo(tag.getSignal(), tag.getNoise());
node->setHighestMaxTxPower(header.GetHighestMaxTxPower());
node->setSecondHighestMaxTxPower(header.GetSecondHighestMaxTxPower());
node->setFinished(header.getGameFinishedFlag());
gs->findHighestTxPowers();
//If the node has a reachpower that is higher than our maximum allowed txPower
if (node->getReachPower() > this->maxAllowedTxPower)
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "/" << Now() << "]: ReachPower for node [" << node->getAddress() << "] is too high: " << node->getReachPower() << "dBm > " << this->maxAllowedTxPower << "dBm; FRAME_TYPE: " << (uint)header.GetFrameType());
//Mark node with the reach problem flag
node->hasReachPowerProblem(true);
//If this node is a child of us
if (gs->isChild(node) && header.GetFrameType() != PARENT_REVOCATION)
{
gs->updateLastFrameType(sender_addr, PARENT_REVOCATION, header.GetSequenceNumber());
//Handle as parent revocation
this->handleParentRevocation(gs, node);
//And reject the connection
this->Send(gs, CHILD_REJECTION, node->getAddress(), node->getReachPower());
return;
}
}
else
{
node->hasReachPowerProblem(false);
//NS_LOG_DEBUG("ReachPower for node [" << node->getAddress() << "]: " << node->getReachPower() << "dBm | hTx: " << node->getHighestMaxTxPower() << "dBm, shTx: " << node->getSecondHighestMaxTxPower() << "dBm");
}
//If node had receiving problems
if (header.hadReceivingProblems())
{
node->hasReachPowerProblem(true);
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "/" << Now() << "]: Recipient had receive problems. New frame type is " << (uint)(header.GetFrameType() & 0b01111111));
//and node is a child of us
if (gs->isChild(node) && header.GetFrameType() != PARENT_REVOCATION)
{
//and its reachpower is too high
if (node->getReachPower() > this->maxAllowedTxPower)
{
gs->updateLastFrameType(sender_addr, PARENT_REVOCATION, header.GetSequenceNumber());
//Handle as parent revocation
this->handleParentRevocation(gs, node);
//And reject the connection
this->Send(gs, CHILD_REJECTION, node->getAddress(), node->getReachPower());
return;
}
else
{
//send out updated information
gs->resetUnchangedCounter();
this->Send(gs, NEIGHBOR_DISCOVERY, this->maxAllowedTxPower);
}
}
}
}
switch (header.GetFrameType())
{
case CYCLE_CHECK:
//If we are the recipient, we need some information from our neighbor list which intermediate nodes could not have since they don't have these neighbors
if (receiver_addr == header.GetOriginator())
this->handleCycleCheck(gs, node, Create<EEBTPNode>(header.GetOriginator(), this->maxAllowedTxPower), gs->getNeighbor(header.GetNewParent()), gs->getNeighbor(header.GetOldParent()));
else
{
Ptr<EEBTPNode> newParent = gs->getNeighbor(header.GetNewParent());
if (newParent == 0)
newParent = Create<EEBTPNode>(header.GetNewParent(), this->maxAllowedTxPower);
Ptr<EEBTPNode> oldParent = gs->getNeighbor(header.GetOldParent());
if (oldParent == 0)
oldParent = Create<EEBTPNode>(header.GetOldParent(), this->maxAllowedTxPower);
if (gs->isChild(header.GetOriginator()))
this->handleCycleCheck(gs, node, gs->getNeighbor(header.GetOriginator()), newParent, oldParent);
else
this->handleCycleCheck(gs, node, Create<EEBTPNode>(header.GetOriginator(), this->maxAllowedTxPower), newParent, oldParent);
}
break;
case NEIGHBOR_DISCOVERY:
this->handleNeighborDiscovery(gs, node);
break;
case CHILD_REQUEST:
this->handleChildRequest(gs, node);
break;
case CHILD_CONFIRMATION:
this->handleChildConfirmation(gs, node);
break;
case CHILD_REJECTION:
this->handleChildRejection(gs, node);
break;
case PARENT_REVOCATION:
this->handleParentRevocation(gs, node);
break;
case END_OF_GAME:
this->handleEndOfGame(gs, node);
break;
case APPLICATION_DATA:
this->handleApplicationData(gs, node, packet->Copy());
break;
default:
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Invalid frame type: " << (int)header.GetFrameType());
}
node->resetReachPowerChanged();
//Print new line to separate events
NS_LOG_DEBUG("\n");
}
/*
* Send methods
*
* The regular send method just takes the frame type, recipient and transmission power,
* build the EEBTPHeader with information from the GameState and hand it over to the final send method.
*
* There is also a send method for quick broadcast. It just takes the frame type and txPower and adds
* the broadcast address as recipient.
*
* To initialize a cycle check there is a send method which takes the originator, newParent and oldParent
* to build the EEBTPHeader and send it to the parent node
*
* The final send method takes care of repeating events (SendEvent), the sequence number and transmission power
*/
void EEBTProtocol::Send(Ptr<GameState> gs, FRAME_TYPE ft, Mac48Address recipient, double txPower)
{
EEBTPHeader header = EEBTPHeader();
header.SetFrameType(ft);
if (ft == CHILD_REJECTION && gs->isChild(recipient))
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Node [" << recipient << "] is a child of mine, but it is marked as a child...");
gs->removeChild(gs->getNeighbor(recipient));
}
this->Send(gs, header, recipient, txPower);
}
//Send method for Sendevent to check if a packet needs retransmission or not
void EEBTProtocol::Send(Ptr<GameState> gs, FRAME_TYPE ft, Mac48Address recipient, uint16_t seqNo, double txPower, Ptr<SendEvent> event)
{
if (ft == CHILD_REQUEST || ft == CHILD_CONFIRMATION || ft == CHILD_REJECTION || ft == PARENT_REVOCATION || ft == END_OF_GAME)
{
Ptr<EEBTPNode> node = gs->getNeighbor(recipient);
if (node == 0)
node = Create<EEBTPNode>(recipient, this->maxAllowedTxPower);
if (ft == CHILD_REQUEST && gs->getContactedParent() != node)
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Packet with seqNo " << seqNo << " will not be retransmitted since the recipient is not our contacted parent");
return;
}
if (this->packetManager->isPacketAcked(seqNo))
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Packet with seqNo " << seqNo << " has been acked. No retransmission, time = " << Now());
this->packetManager->deleteSeqNoEntry(seqNo);
return;
}
else if (this->packetManager->isPacketLost(seqNo) || event->getNTimes() > 20)
{
if (event->getNTimes() > 20)
{
if (ft == CHILD_REQUEST && txPower >= this->maxAllowedTxPower)
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Packet with seqNo " << seqNo << " has not been acked yet. Cancle..., time = " << Now());
this->handleChildRejection(gs, gs->getNeighbor(recipient));
}
else
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Packet with seqNo " << seqNo << " has not been acked yet. Retransmitting..., time = " << Now());
}
else
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Packet with seqNo " << seqNo << " has been lost. Retransmitting..., time = " << Now());
this->packetManager->deleteSeqNoEntry(seqNo);
EEBTPHeader header;
header.SetFrameType(ft);
header.SetSequenceNumber(seqNo);
this->Send(gs, header, recipient, txPower + 1, true);
}
else
{
Time ttw = this->device->GetMac()->GetAckTimeout() * 200;
Simulator::Schedule(ttw, event);
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Rescheduled SendEvent(" << seqNo << ") for " << (Now() + ttw) << ", now = " << Now());
}
}
else
{
//NS_FATAL_ERROR("[Node " << this->device->GetNode()->GetId() << "]: Invalid frametype to send: " << (uint)ft);
this->Send(gs, ft, recipient, txPower);
}
}
//Send method for quick broadcasts
void EEBTProtocol::Send(Ptr<GameState> gs, FRAME_TYPE ft, double txPower)
{
this->Send(gs, ft, Mac48Address::GetBroadcast(), txPower);
}
//Send method for initializing cycle checks
void EEBTProtocol::Send(Ptr<GameState> gs, Mac48Address originator, Mac48Address newParent, Mac48Address oldParent)
{
EEBTPHeader header = EEBTPHeader();
header.SetFrameType(CYCLE_CHECK);
header.SetOriginator(originator);
header.SetNewParent(newParent);
header.SetOldParent(oldParent);
//If we have a parent, send cycle check to our parent
//If we are currently switching our parent, it is not necessary since we will send a cycle check after connection successfully
if (gs->getParent() != 0)
this->Send(gs, header, gs->getParent()->getAddress(), gs->getParent()->getReachPower());
else
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Cannot send cycle check since we have no parent");
}
//Send method for CCSendevent to check if a packet needs retransmission or not
void EEBTProtocol::Send(Ptr<GameState> gs, Mac48Address originator, Mac48Address newParent, Mac48Address oldParent, uint16_t seqNo, double txPower, Ptr<CCSendEvent> event)
{
if (this->packetManager->isPacketAcked(seqNo))
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Packet with seqNo " << seqNo << " has been acked. No retransmission, time = " << Now());
this->packetManager->deleteSeqNoEntry(seqNo);
return;
}
else if (this->packetManager->isPacketLost(seqNo) || event->getNTimes() > 20)
{
if (event->getNTimes() > 20)
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Packet with seqNo " << seqNo << " has not been acked yet. Retransmitting..., time = " << Now());
else
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Packet with seqNo " << seqNo << " has been lost. Retransmitting..., time = " << Now());
this->packetManager->deleteSeqNoEntry(seqNo);
EEBTPHeader header = EEBTPHeader();
header.SetFrameType(CYCLE_CHECK);
header.SetOriginator(originator);
header.SetNewParent(newParent);
header.SetOldParent(oldParent);
header.SetSequenceNumber(seqNo);
//If we have a parent, send cycle check to our parent
//If we are currently switching our parent, it is not necessary since we will send a cycle check after connection successfully
if (gs->getParent() != 0)
this->Send(gs, header, gs->getParent()->getAddress(), gs->getParent()->getReachPower() + 1, true);
else
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Cannot send cycle check since we have no parent");
}
else
{
Time ttw = this->device->GetMac()->GetAckTimeout() * 200;
//Simulator::Schedule(ttw, Create<CCSendEvent>(gs, this, originator, newParent, oldParent, txPower, seqNo));
Simulator::Schedule(ttw, event);
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Rescheduled CCSendEvent(" << seqNo << ") for " << (Now() + ttw) << ", now = " << Now());
}
}
void EEBTProtocol::Send(Ptr<GameState> gs, EEBTPHeader header, Mac48Address recipient, double txPower)
{
this->Send(gs, header, recipient, txPower, false);
}
//Final send method
void EEBTProtocol::Send(Ptr<GameState> gs, EEBTPHeader header, Mac48Address recipient, double txPower, bool isRetransmission)
{
//Adjust the transmission power
header.setReceivingProblems(false);
if (txPower > this->maxAllowedTxPower)
{
txPower = this->maxAllowedTxPower;
header.setReceivingProblems(true);
}
gs->findHighestTxPowers();
//Set sequence number
if (!isRetransmission)
this->cache.injectSeqNo(&header);
if (header.GetFrameType() == NEIGHBOR_DISCOVERY) //Check the neighbor discovery event handler (SendEvent)
{
if (!this->checkNeigborDiscoverySendEvent(gs))
return;
}
//Packet size must be greater than 0 to prevent this error in visualized mode:
// assert failed. cond="m_current >= m_dataStart && m_current < m_dataEnd"
Ptr<Packet> packet = Create<Packet>(1);
header.SetGameId(gs->getGameID());
header.SetTxPower(txPower);
if (gs->getParent() == 0)
header.SetParent(Mac48Address::GetBroadcast());
else
header.SetParent(gs->getParent()->getAddress());
header.SetHighestMaxTxPower(gs->getHighestTxPower());
header.SetSecondHighestMaxTxPower(gs->getSecondHighestTxPower());
header.setGameFinishedFlag(gs->gameFinished());
packet->AddHeader(header);
if (header.GetFrameType() == CYCLE_CHECK)
{
Time ttw = this->device->GetMac()->GetAckTimeout() * 100;
Simulator::Schedule(ttw, Create<CCSendEvent>(gs, this, header.GetOriginator(), header.GetNewParent(), header.GetOldParent(), txPower, header.GetSequenceNumber()));
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Scheduled CCSendEvent(" << header.GetSequenceNumber() << ") for " << (Now() + ttw));
}
else if (header.GetFrameType() == CHILD_REQUEST || header.GetFrameType() == CHILD_CONFIRMATION || header.GetFrameType() == CHILD_REJECTION || header.GetFrameType() == PARENT_REVOCATION || header.GetFrameType() == END_OF_GAME)
{
Time ttw = this->device->GetMac()->GetAckTimeout() * 100;
EventId id = Simulator::Schedule(ttw, Create<SendEvent>(gs, this, (FRAME_TYPE)header.GetFrameType(), recipient, txPower, header.GetSequenceNumber()));
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Scheduled SendEvent(" << (uint)header.GetFrameType() << ") for " << (Now() + ttw) << ". EventID = " << id.GetUid());
}
/*Ptr<EEBTPQueueDiscItem> qdi = Create<EEBTPQueueDiscItem>(packet, recipient, EEBTProtocol::PROT_NUMBER);
this->tcl->Send(this->device, qdi);*/
EEBTPTag tag;
tag.setGameID(gs->getGameID());
tag.setFrameType(header.GetFrameType());
tag.setSequenceNumber(header.GetSequenceNumber());
tag.setTxPower(header.GetTxPower());
packet->AddPacketTag(tag);
this->packetManager->sendPacket(packet, recipient);
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: EEBTProtocol::Send(): " << this->myAddress << " => " << recipient << " / SeqNo: " << header.GetSequenceNumber() << " / FRAME_TYPE: " << (uint)header.GetFrameType() << " / txPower: " << header.GetTxPower() << "/" << this->wifiPhy->GetTxPowerStart() << "|" << this->wifiPhy->GetTxPowerEnd() << "dBm");
NS_LOG_DEBUG("\thTx: " << header.GetHighestMaxTxPower() << ", shTx: " << header.GetSecondHighestMaxTxPower() << ", rounds: " << gs->getUnchangedCounter() << "/" << ((gs->getNNeighbors() * 0.5) + 2));
}
/*
* Handle the cycle check (FrameType 0)
*/
void EEBTProtocol::handleCycleCheck(Ptr<GameState> gs, Ptr<EEBTPNode> node, Ptr<EEBTPNode> originator, Ptr<EEBTPNode> newParent, Ptr<EEBTPNode> oldParent)
{
NS_ASSERT_MSG(originator != 0, "originator is null");
NS_ASSERT_MSG(newParent != 0, "newParent is null");
NS_ASSERT_MSG(oldParent != 0, "oldParent is null");
NS_LOG_DEBUG(this->device->GetNode()->GetId() << " => EEBTProtocol::handleCycleCheck() | FROM: " << node->getAddress() << " | ORIG: " << originator->getAddress() << " | nP: " << newParent->getAddress() << " | oP: " << oldParent->getAddress());
if (gs->isInitiator())
{
//NS_LOG_DEBUG("Ignoring cycle check from " << node->getAddress() << " because I am the initiator");
}
else if (originator->getAddress() == this->myAddress)
{
if (gs->getParent() != 0 && newParent->getAddress() == gs->getParent()->getAddress())
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Cycle detected! Connecting to last parent (" << oldParent->getAddress() << ") and blacklisting (" << newParent->getAddress() << "," << newParent->getParentAddress() << ")");
//Set my parent with its parent on the blacklist
gs->updateBlacklist(gs->getParent());
this->disconnectOldParent(gs);
//Remove all my previous parents from the list until the oldParent occurs
if (gs->hasLastParents())
{
Ptr<EEBTPNode> p = gs->popLastParent();
while (p != oldParent && gs->hasLastParents())
p = gs->popLastParent();
}
//Try to connect to one of our last parents
//We get automatically disconnected from our current parent
Ptr<EEBTPNode> lastParent = gs->popLastParent();
while (lastParent != 0)
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Last parent is also blacklisted, contacting another last parent [" << lastParent->getAddress() << "]");
this->contactNode(gs, lastParent);
//If we cannot contact lastParent, get next lastParent from stack, else break the loop
if (gs->getContactedParent() == 0)
lastParent = gs->popLastParent();
else
break;
}
//If we could not contact a lastParent, search for cheapest neighbor
if (gs->getContactedParent() == 0)
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: None of our last parents is an option, searching cheapest neighbor...");
this->contactCheapestNeighbor(gs);
//If we are not able to find a valid cheapest neighbor, disconnect child nodes and try again
if (gs->getContactedParent() == 0)
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Unable to connect to any other node. Disconnecting children...");
this->disconnectAllChildNodes(gs);
this->contactCheapestNeighbor(gs);
}
}
}
else
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Cycle detected! newParent: " << newParent->getAddress() << ", currentParent: " << ((gs->getParent() != 0) ? gs->getParent()->getAddress() : "ff:ff:ff:ff:ff:ff"));
//Blacklist newParent, since this route creates a cycle
gs->updateBlacklist(newParent);
}
}
else
{
//We are not the originator of that packet nor the initiator of the game. Sending this packet to our parent
this->Send(gs, originator->getAddress(), newParent->getAddress(), oldParent->getAddress());
}
}
/*
* Handle neighbor discovery (FrameType 1)
*/
void EEBTProtocol::handleNeighborDiscovery(Ptr<GameState> gs, Ptr<EEBTPNode> node)
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: EEBTProtocol::handleNeighborDiscovery()");
if (gs->isInitiator()) //Check if I am the initiator. If yes, we can ignore this packet
{
//NS_LOG_DEBUG("Ignoring neighbor discovery from " << node->getAddress() << " because I am the initiator");
}
else if (gs->isBlacklisted(node)) //If the sender is on our blacklist due to a cycle, ignore
{
//NS_LOG_DEBUG("Ignoring neighbor discovery from " << node->getAddress() << " because it and its parent (" << node->getParentAddress() << ") are blacklisted.");
}
else if (gs->isChild(node)) //Check if sender is child of me
{
//NS_LOG_DEBUG("Ignoring neighbor discovery from " << node->getAddress() << " because it is a child of mine");
//If the reachpower of this child changed, inform neighbors
if (node->reachPowerChanged() && gs->gameFinished())
this->Send(gs, NEIGHBOR_DISCOVERY, this->maxAllowedTxPower);
}
else if (node->getReachPower() > this->maxAllowedTxPower)
{
//NS_LOG_DEBUG("Ignoring neighbor discovery from " << node->getAddress() << " because I cannot reach it (" << node->getReachPower() << " dBm)");
}
else if (node->getConnCounter() > 5)
{
//NS_LOG_DEBUG("Ignoring neighbor discovery from " << node->getAddress() << " because connection counter exceeds the maximum");
}
else if (node == gs->getLastParent())
{
//NS_LOG_DEBUG("Ignoring neighbor discovery from " << node->getAddress() << " because it is my last parent");
}
else if (gs->getContactedParent() == 0)
{
//If we have no parent and are not connecting to on
if (gs->getParent() == 0)
{
gs->resetRejectionCounter();
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Switching to [" << node->getAddress() << "] because of neighbor discovery");
return this->contactNode(gs, node);
}
else if (gs->getParent() != 0 && node != gs->getParent())
{
//Cost of current connection (connCost) is 0 if we are (one of) the nodes that are the farthest away
Ptr<EEBTPNode> parent = gs->getParent();
double connCost = (parent->getHighestMaxTxPower() - parent->getReachPower());
//Only if we are (one of) the nodes that are the farthest away, it is useful to switch (else no savings)
if (connCost <= 0.00001 && connCost >= -0.00001)
{
//TX power our parent can save, if we leave
double saving = DbmToW(gs->getParent()->getHighestMaxTxPower()) - DbmToW(gs->getParent()->getSecondHighestMaxTxPower());
//Cost of the new connection is the difference between the node's highest tx power and the reach power to this node
double costOfNewConn = DbmToW(node->getReachPower()) - DbmToW(node->getHighestMaxTxPower());
//If we are actually saving tx power, switch
if (costOfNewConn <= saving)
{
if (costOfNewConn < saving + 0.0001 && costOfNewConn > saving - 0.0001 && (gs->gameFinished() || gs->getUnchangedCounter() >= EEBTProtocol::MAX_UNCHANGED_ROUNDS))
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Ignoring neighbor discovery from [" << node->getAddress() << "] since we cannot realy save energy an we had too many unchanged roundes");
else
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Switching to [" << node->getAddress() << "] because of neighbor discovery");
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: "
<< "rp(" << node->getAddress() << ") = " << node->getReachPower() << ", "
<< "hTx(" << node->getAddress() << ") = " << node->getHighestMaxTxPower() << ", "
<< "shTx(" << node->getAddress() << ") = " << node->getSecondHighestMaxTxPower());
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: "
<< "rp(" << gs->getParent()->getAddress() << ") = " << gs->getParent()->getReachPower() << ", "
<< "hTx(" << gs->getParent()->getAddress() << ") = " << gs->getParent()->getHighestMaxTxPower() << ", "
<< "shTx(" << gs->getParent()->getAddress() << ") = " << gs->getParent()->getSecondHighestMaxTxPower());
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: saving = " << saving << "W, costOfNewConn = " << costOfNewConn << "W");
this->contactNode(gs, node);
}
}
else
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << " / " << Now() << "]: [" << node->getAddress() << "] is NOT a better choice than our current parent");
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: "
<< "rp(" << node->getAddress() << ") = " << node->getReachPower() << ", "
<< "hTx(" << node->getAddress() << ") = " << node->getHighestMaxTxPower() << ", "
<< "shTx(" << node->getAddress() << ") = " << node->getSecondHighestMaxTxPower());
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: "
<< "rp(" << gs->getParent()->getAddress() << ") = " << gs->getParent()->getReachPower() << ", "
<< "hTx(" << gs->getParent()->getAddress() << ") = " << gs->getParent()->getHighestMaxTxPower() << ", "
<< "shTx(" << gs->getParent()->getAddress() << ") = " << gs->getParent()->getSecondHighestMaxTxPower());
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: saving = " << saving << ", costOfNewConn = " << costOfNewConn);
}
}
else
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << " / " << Now() << "]: Ignoring neighbor discovery from [" << node->getAddress() << "] since we cannot save energy by leaving our parent: "
<< DbmToW(gs->getParent()->getHighestMaxTxPower()) << " - " << DbmToW(gs->getParent()->getSecondHighestMaxTxPower()) << " = " << gs->getCostOfCurrentConn());
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: "
<< "rp(" << gs->getParent()->getAddress() << ") = " << gs->getParent()->getReachPower() << ", "
<< "hTx(" << gs->getParent()->getAddress() << ") = " << gs->getParent()->getHighestMaxTxPower() << ", "
<< "shTx(" << gs->getParent()->getAddress() << ") = " << gs->getParent()->getSecondHighestMaxTxPower());
}
}
}
}
/*
* Handle child request (FrameType 2)
* Sent by child, received by parent
* if a child wants to connect to the parent node
*/
void EEBTProtocol::handleChildRequest(Ptr<GameState> gs, Ptr<EEBTPNode> node)
{
//NS_LOG_DEBUG(this->device->GetNode()->GetId() << " => EEBTProtocol::handleChildRequest()");
//Check if we received a parent revocation after this child request
if (gs->checkLastFrameType(node->getAddress(), CHILD_REQUEST, gs->getLastSeqNo(node->getAddress(), PARENT_REVOCATION)))
{
NS_LOG_DEBUG("[Node " << this->device->GetNode()->GetId() << "]: Child request from [" << node->getAddress() << "] dismissed because we received a PARENT_REVOCATION with a higher sequence number earlier.");
return;
}
//Reject child request if the reach power for this node exceeds our maxAllowedTxPower