574 lines
20 KiB
C++
574 lines
20 KiB
C++
/*
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* Copyright (c) 2014 Universidad de la República - Uruguay
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*
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* SPDX-License-Identifier: GPL-2.0-only
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*
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* Author: Matias Richart <mrichart@fing.edu.uy>
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*/
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/**
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* This example program is designed to illustrate the behavior of three
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* power/rate-adaptive WiFi rate controls; namely, ns3::ParfWifiManager,
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* ns3::AparfWifiManager and ns3::RrpaaWifiManager.
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*
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* The output of this is typically two plot files, named throughput-parf.plt
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* (or throughput-aparf.plt, if Aparf is used) and power-parf.plt. If
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* Gnuplot program is available, one can use it to convert the plt file
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* into an eps file, by running:
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* \code{.sh}
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* gnuplot throughput-parf.plt
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* @endcode
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* Also, to enable logging of rate and power changes to the terminal, set this
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* environment variable:
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* \code{.sh}
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* export NS_LOG=PowerAdaptationDistance=level_info
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* @endcode
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*
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* This simulation consist of 2 nodes, one AP and one STA.
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* The AP generates UDP traffic with a CBR of 54 Mbps to the STA.
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* The AP can use any power and rate control mechanism and the STA uses
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* only Minstrel rate control.
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* The STA can be configured to move away from (or towards to) the AP.
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* By default, the AP is at coordinate (0,0,0) and the STA starts at
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* coordinate (5,0,0) (meters) and moves away on the x axis by 1 meter every
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* second.
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*
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* The output consists of:
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* - A plot of average throughput vs. distance.
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* - A plot of average transmit power vs. distance.
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* - (if logging is enabled) the changes of power and rate to standard output.
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*
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* The Average Transmit Power is defined as an average of the power
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* consumed per measurement interval, expressed in milliwatts. The
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* power level for each frame transmission is reported by the simulator,
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* and the energy consumed is obtained by multiplying the power by the
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* frame duration. At every 'stepTime' (defaulting to 1 second), the
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* total energy for the collection period is divided by the step time
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* and converted from dbm to milliwatt units, and this average is
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* plotted against time.
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*
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* When neither Parf, Aparf or Rrpaa is selected as the rate control, the
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* generation of the plot of average transmit power vs distance is suppressed
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* since the other Wifi rate controls do not support the necessary callbacks
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* for computing the average power.
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*
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* To display all the possible arguments and their defaults:
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* \code{.sh}
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* ./ns3 run "wifi-power-adaptation-distance --help"
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* @endcode
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*
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* Example usage (selecting Aparf rather than Parf):
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* \code{.sh}
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* ./ns3 run "wifi-power-adaptation-distance --manager=ns3::AparfWifiManager
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* --outputFileName=aparf" \endcode
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*
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* Another example (moving towards the AP):
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* \code{.sh}
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* ./ns3 run "wifi-power-adaptation-distance --manager=ns3::AparfWifiManager
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* --outputFileName=aparf --stepsSize=-1 --STA1_x=200" \endcode
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*
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* To enable the log of rate and power changes:
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* \code{.sh}
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* export NS_LOG=PowerAdaptationDistance=level_info
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* @endcode
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*/
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#include "ns3/command-line.h"
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#include "ns3/config.h"
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#include "ns3/double.h"
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#include "ns3/gnuplot.h"
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#include "ns3/internet-stack-helper.h"
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#include "ns3/ipv4-address-helper.h"
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#include "ns3/log.h"
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#include "ns3/mobility-helper.h"
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#include "ns3/mobility-model.h"
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#include "ns3/on-off-helper.h"
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#include "ns3/packet-sink-helper.h"
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#include "ns3/ssid.h"
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#include "ns3/uinteger.h"
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#include "ns3/wifi-mac-header.h"
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#include "ns3/wifi-mac.h"
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#include "ns3/wifi-net-device.h"
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#include "ns3/yans-wifi-channel.h"
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#include "ns3/yans-wifi-helper.h"
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using namespace ns3;
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NS_LOG_COMPONENT_DEFINE("PowerAdaptationDistance");
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/// Packet size generated at the AP
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static const uint32_t packetSize = 1420;
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/**
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* @brief Class to collect node statistics.
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*/
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class NodeStatistics
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{
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public:
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/**
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* @brief Constructor.
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*
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* @param aps Access points
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* @param stas WiFi Stations.
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*/
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NodeStatistics(NetDeviceContainer aps, NetDeviceContainer stas);
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/**
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* @brief Callback called by WifiNetDevice/Phy/PhyTxBegin.
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*
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* @param path The trace path.
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* @param packet The sent packet.
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* @param powerW The Tx power.
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*/
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void PhyCallback(std::string path, Ptr<const Packet> packet, double powerW);
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/**
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* @brief Callback called by PacketSink/Rx.
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*
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* @param path The trace path.
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* @param packet The received packet.
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* @param from The sender address.
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*/
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void RxCallback(std::string path, Ptr<const Packet> packet, const Address& from);
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/**
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* @brief Callback called by WifiNetDevice/RemoteStationManager/x/PowerChange.
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*
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* @param path The trace path.
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* @param oldPower Old Tx power.
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* @param newPower Actual Tx power.
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* @param dest Destination of the transmission.
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*/
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void PowerCallback(std::string path, double oldPower, double newPower, Mac48Address dest);
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/**
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* @brief Callback called by WifiNetDevice/RemoteStationManager/x/RateChange.
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*
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* @param path The trace path.
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* @param oldRate Old rate.
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* @param newRate Actual rate.
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* @param dest Destination of the transmission.
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*/
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void RateCallback(std::string path, DataRate oldRate, DataRate newRate, Mac48Address dest);
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/**
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* @brief Set the Position of a node.
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*
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* @param node The node.
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* @param position The position.
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*/
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void SetPosition(Ptr<Node> node, Vector position);
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/**
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* Move a node.
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* @param node The node.
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* @param stepsSize The step size.
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* @param stepsTime Time on each step.
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*/
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void AdvancePosition(Ptr<Node> node, int stepsSize, Time stepsTime);
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/**
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* @brief Get the Position of a node.
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*
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* @param node The node.
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* @return the position of the node.
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*/
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Vector GetPosition(Ptr<Node> node);
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/**
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* @brief Get the Throughput output data
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*
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* @return the Throughput output data.
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*/
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Gnuplot2dDataset GetDatafile();
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/**
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* @brief Get the Power output data.
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*
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* @return the Power output data.
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*/
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Gnuplot2dDataset GetPowerDatafile();
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private:
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/// Time, DataRate pair vector.
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typedef std::vector<std::pair<Time, DataRate>> TxTime;
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/**
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* @brief Setup the WifiPhy object.
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*
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* @param phy The WifiPhy to setup.
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*/
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void SetupPhy(Ptr<WifiPhy> phy);
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/**
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* @brief Get the time at which a given datarate has been recorded.
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*
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* @param rate The datarate to search.
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* @return the time.
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*/
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Time GetCalcTxTime(DataRate rate);
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std::map<Mac48Address, dBm_u> m_currentPower; //!< Current Tx power for each sender.
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std::map<Mac48Address, DataRate> m_currentRate; //!< Current Tx rate for each sender.
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uint32_t m_bytesTotal; //!< Number of received bytes on a given state.
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double m_totalEnergy; //!< Energy used on a given state.
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double m_totalTime; //!< Time spent on a given state.
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TxTime m_timeTable; //!< Time, DataRate table.
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Gnuplot2dDataset m_output; //!< Throughput output data.
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Gnuplot2dDataset m_output_power; //!< Power output data.
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};
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NodeStatistics::NodeStatistics(NetDeviceContainer aps, NetDeviceContainer stas)
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{
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Ptr<NetDevice> device = aps.Get(0);
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Ptr<WifiNetDevice> wifiDevice = DynamicCast<WifiNetDevice>(device);
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Ptr<WifiPhy> phy = wifiDevice->GetPhy();
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SetupPhy(phy);
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DataRate dataRate = DataRate(phy->GetDefaultMode().GetDataRate(phy->GetChannelWidth()));
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const auto power = phy->GetTxPowerEnd();
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for (uint32_t j = 0; j < stas.GetN(); j++)
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{
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Ptr<NetDevice> staDevice = stas.Get(j);
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Ptr<WifiNetDevice> wifiStaDevice = DynamicCast<WifiNetDevice>(staDevice);
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Mac48Address addr = wifiStaDevice->GetMac()->GetAddress();
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m_currentPower[addr] = power;
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m_currentRate[addr] = dataRate;
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}
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m_currentRate[Mac48Address("ff:ff:ff:ff:ff:ff")] = dataRate;
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m_totalEnergy = 0;
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m_totalTime = 0;
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m_bytesTotal = 0;
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m_output.SetTitle("Throughput Mbits/s");
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m_output_power.SetTitle("Average Transmit Power");
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}
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void
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NodeStatistics::SetupPhy(Ptr<WifiPhy> phy)
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{
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for (const auto& mode : phy->GetModeList())
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{
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WifiTxVector txVector;
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txVector.SetMode(mode);
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txVector.SetPreambleType(WIFI_PREAMBLE_LONG);
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txVector.SetChannelWidth(phy->GetChannelWidth());
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DataRate dataRate(mode.GetDataRate(phy->GetChannelWidth()));
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Time time = WifiPhy::CalculateTxDuration(packetSize, txVector, phy->GetPhyBand());
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NS_LOG_DEBUG(mode.GetUniqueName() << " " << time.GetSeconds() << " " << dataRate);
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m_timeTable.emplace_back(time, dataRate);
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}
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}
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Time
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NodeStatistics::GetCalcTxTime(DataRate rate)
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{
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for (auto i = m_timeTable.begin(); i != m_timeTable.end(); i++)
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{
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if (rate == i->second)
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{
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return i->first;
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}
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}
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NS_ASSERT(false);
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return Time(0);
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}
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void
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NodeStatistics::PhyCallback(std::string path, Ptr<const Packet> packet, double powerW)
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{
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WifiMacHeader head;
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packet->PeekHeader(head);
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Mac48Address dest = head.GetAddr1();
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if (head.GetType() == WIFI_MAC_DATA)
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{
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const auto txTimeSeconds = GetCalcTxTime(m_currentRate[dest]).GetSeconds();
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m_totalEnergy += DbmToW(m_currentPower[dest]) * txTimeSeconds;
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m_totalTime += txTimeSeconds;
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}
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}
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void
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NodeStatistics::PowerCallback(std::string path, double oldPower, double newPower, Mac48Address dest)
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{
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m_currentPower[dest] = dBm_u{newPower};
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}
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void
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NodeStatistics::RateCallback(std::string path,
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DataRate oldRate,
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DataRate newRate,
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Mac48Address dest)
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{
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m_currentRate[dest] = newRate;
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}
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void
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NodeStatistics::RxCallback(std::string path, Ptr<const Packet> packet, const Address& from)
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{
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m_bytesTotal += packet->GetSize();
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}
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void
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NodeStatistics::SetPosition(Ptr<Node> node, Vector position)
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{
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Ptr<MobilityModel> mobility = node->GetObject<MobilityModel>();
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mobility->SetPosition(position);
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}
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Vector
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NodeStatistics::GetPosition(Ptr<Node> node)
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{
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Ptr<MobilityModel> mobility = node->GetObject<MobilityModel>();
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return mobility->GetPosition();
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}
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void
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NodeStatistics::AdvancePosition(Ptr<Node> node, int stepsSize, Time stepsTime)
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{
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Vector pos = GetPosition(node);
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double mbs = ((m_bytesTotal * 8.0) / stepsTime.GetMicroSeconds());
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m_bytesTotal = 0;
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double atp = m_totalEnergy / stepsTime.GetSeconds();
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m_totalEnergy = 0;
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m_totalTime = 0;
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m_output_power.Add(pos.x, atp);
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m_output.Add(pos.x, mbs);
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pos.x += stepsSize;
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SetPosition(node, pos);
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NS_LOG_INFO("At time " << Simulator::Now().GetSeconds() << " sec; setting new position to "
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<< pos);
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Simulator::Schedule(stepsTime,
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&NodeStatistics::AdvancePosition,
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this,
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node,
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stepsSize,
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stepsTime);
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}
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Gnuplot2dDataset
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NodeStatistics::GetDatafile()
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{
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return m_output;
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}
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Gnuplot2dDataset
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NodeStatistics::GetPowerDatafile()
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{
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return m_output_power;
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}
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/**
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* Callback called by WifiNetDevice/RemoteStationManager/x/PowerChange.
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*
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* @param path The trace path.
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* @param oldPower Old Tx power.
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* @param newPower Actual Tx power.
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* @param dest Destination of the transmission.
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*/
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void
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PowerCallback(std::string path, double oldPower, double newPower, Mac48Address dest)
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{
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NS_LOG_INFO((Simulator::Now()).GetSeconds()
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<< " " << dest << " Old power=" << oldPower << " New power=" << newPower);
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}
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/**
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* @brief Callback called by WifiNetDevice/RemoteStationManager/x/RateChange.
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*
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* @param path The trace path.
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* @param oldRate Old rate.
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* @param newRate Actual rate.
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* @param dest Destination of the transmission.
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*/
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void
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RateCallback(std::string path, DataRate oldRate, DataRate newRate, Mac48Address dest)
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{
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NS_LOG_INFO((Simulator::Now()).GetSeconds()
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<< " " << dest << " Old rate=" << oldRate << " New rate=" << newRate);
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}
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int
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main(int argc, char* argv[])
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{
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dBm_u maxPower{17};
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dBm_u minPower{0};
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uint32_t powerLevels{18};
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uint32_t rtsThreshold{2346};
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std::string manager{"ns3::ParfWifiManager"};
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std::string outputFileName{"parf"};
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int ap1_x{0};
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int ap1_y{0};
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int sta1_x{5};
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int sta1_y{0};
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uint32_t steps{200};
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meter_u stepsSize{1};
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Time stepsTime{"1s"};
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CommandLine cmd(__FILE__);
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cmd.AddValue("manager", "PRC Manager", manager);
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cmd.AddValue("rtsThreshold", "RTS threshold", rtsThreshold);
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cmd.AddValue("outputFileName", "Output filename", outputFileName);
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cmd.AddValue("steps", "How many different distances to try", steps);
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cmd.AddValue("stepsTime", "Time on each step", stepsTime);
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cmd.AddValue("stepsSize", "Distance between steps", stepsSize);
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cmd.AddValue("maxPower", "Maximum available transmission level (dbm).", maxPower);
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cmd.AddValue("minPower", "Minimum available transmission level (dbm).", minPower);
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cmd.AddValue("powerLevels",
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"Number of transmission power levels available between "
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"TxPowerStart and TxPowerEnd included.",
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powerLevels);
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cmd.AddValue("AP1_x", "Position of AP1 in x coordinate", ap1_x);
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cmd.AddValue("AP1_y", "Position of AP1 in y coordinate", ap1_y);
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cmd.AddValue("STA1_x", "Position of STA1 in x coordinate", sta1_x);
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cmd.AddValue("STA1_y", "Position of STA1 in y coordinate", sta1_y);
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cmd.Parse(argc, argv);
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if (steps == 0)
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{
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std::cout << "Exiting without running simulation; steps value of 0" << std::endl;
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}
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Time simuTime = (steps + 1) * stepsTime;
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// Define the APs
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NodeContainer wifiApNodes;
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wifiApNodes.Create(1);
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// Define the STAs
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NodeContainer wifiStaNodes;
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wifiStaNodes.Create(1);
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WifiHelper wifi;
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wifi.SetStandard(WIFI_STANDARD_80211a);
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WifiMacHelper wifiMac;
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YansWifiPhyHelper wifiPhy;
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YansWifiChannelHelper wifiChannel = YansWifiChannelHelper::Default();
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wifiPhy.SetChannel(wifiChannel.Create());
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NetDeviceContainer wifiApDevices;
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NetDeviceContainer wifiStaDevices;
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NetDeviceContainer wifiDevices;
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// Configure the STA node
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wifi.SetRemoteStationManager("ns3::MinstrelWifiManager",
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"RtsCtsThreshold",
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UintegerValue(rtsThreshold));
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wifiPhy.Set("TxPowerStart", DoubleValue(maxPower));
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wifiPhy.Set("TxPowerEnd", DoubleValue(maxPower));
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Ssid ssid = Ssid("AP");
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wifiMac.SetType("ns3::StaWifiMac", "Ssid", SsidValue(ssid));
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wifiStaDevices.Add(wifi.Install(wifiPhy, wifiMac, wifiStaNodes.Get(0)));
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// Configure the AP node
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wifi.SetRemoteStationManager(manager,
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"DefaultTxPowerLevel",
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UintegerValue(powerLevels - 1),
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"RtsCtsThreshold",
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UintegerValue(rtsThreshold));
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wifiPhy.Set("TxPowerStart", DoubleValue(minPower));
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wifiPhy.Set("TxPowerEnd", DoubleValue(maxPower));
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wifiPhy.Set("TxPowerLevels", UintegerValue(powerLevels));
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ssid = Ssid("AP");
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wifiMac.SetType("ns3::ApWifiMac", "Ssid", SsidValue(ssid));
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wifiApDevices.Add(wifi.Install(wifiPhy, wifiMac, wifiApNodes.Get(0)));
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wifiDevices.Add(wifiStaDevices);
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wifiDevices.Add(wifiApDevices);
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// Configure the mobility.
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MobilityHelper mobility;
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Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
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// Initial position of AP and STA
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positionAlloc->Add(Vector(ap1_x, ap1_y, 0.0));
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NS_LOG_INFO("Setting initial AP position to " << Vector(ap1_x, ap1_y, 0.0));
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positionAlloc->Add(Vector(sta1_x, sta1_y, 0.0));
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NS_LOG_INFO("Setting initial STA position to " << Vector(sta1_x, sta1_y, 0.0));
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mobility.SetPositionAllocator(positionAlloc);
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mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
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mobility.Install(wifiApNodes.Get(0));
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mobility.Install(wifiStaNodes.Get(0));
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// Statistics counter
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NodeStatistics statistics = NodeStatistics(wifiApDevices, wifiStaDevices);
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|
// Move the STA by stepsSize meters every stepsTime seconds
|
|
Simulator::Schedule(Seconds(0.5) + stepsTime,
|
|
&NodeStatistics::AdvancePosition,
|
|
&statistics,
|
|
wifiStaNodes.Get(0),
|
|
stepsSize,
|
|
stepsTime);
|
|
|
|
// Configure the IP stack
|
|
InternetStackHelper stack;
|
|
stack.Install(wifiApNodes);
|
|
stack.Install(wifiStaNodes);
|
|
Ipv4AddressHelper address;
|
|
address.SetBase("10.1.1.0", "255.255.255.0");
|
|
Ipv4InterfaceContainer i = address.Assign(wifiDevices);
|
|
Ipv4Address sinkAddress = i.GetAddress(0);
|
|
uint16_t port = 9;
|
|
|
|
// Configure the CBR generator
|
|
PacketSinkHelper sink("ns3::UdpSocketFactory", InetSocketAddress(sinkAddress, port));
|
|
ApplicationContainer apps_sink = sink.Install(wifiStaNodes.Get(0));
|
|
|
|
OnOffHelper onoff("ns3::UdpSocketFactory", InetSocketAddress(sinkAddress, port));
|
|
onoff.SetConstantRate(DataRate("54Mb/s"), packetSize);
|
|
onoff.SetAttribute("StartTime", TimeValue(Seconds(0.5)));
|
|
onoff.SetAttribute("StopTime", TimeValue(simuTime));
|
|
ApplicationContainer apps_source = onoff.Install(wifiApNodes.Get(0));
|
|
|
|
apps_sink.Start(Seconds(0.5));
|
|
apps_sink.Stop(simuTime);
|
|
|
|
//------------------------------------------------------------
|
|
//-- Setup stats and data collection
|
|
//--------------------------------------------
|
|
|
|
// Register packet receptions to calculate throughput
|
|
Config::Connect("/NodeList/1/ApplicationList/*/$ns3::PacketSink/Rx",
|
|
MakeCallback(&NodeStatistics::RxCallback, &statistics));
|
|
|
|
// Register power and rate changes to calculate the Average Transmit Power
|
|
Config::Connect("/NodeList/0/DeviceList/*/$ns3::WifiNetDevice/RemoteStationManager/$" +
|
|
manager + "/PowerChange",
|
|
MakeCallback(&NodeStatistics::PowerCallback, &statistics));
|
|
Config::Connect("/NodeList/0/DeviceList/*/$ns3::WifiNetDevice/RemoteStationManager/$" +
|
|
manager + "/RateChange",
|
|
MakeCallback(&NodeStatistics::RateCallback, &statistics));
|
|
|
|
Config::Connect("/NodeList/0/DeviceList/*/$ns3::WifiNetDevice/Phy/PhyTxBegin",
|
|
MakeCallback(&NodeStatistics::PhyCallback, &statistics));
|
|
|
|
// Callbacks to print every change of power and rate
|
|
Config::Connect("/NodeList/0/DeviceList/*/$ns3::WifiNetDevice/RemoteStationManager/$" +
|
|
manager + "/PowerChange",
|
|
MakeCallback(PowerCallback));
|
|
Config::Connect("/NodeList/0/DeviceList/*/$ns3::WifiNetDevice/RemoteStationManager/$" +
|
|
manager + "/RateChange",
|
|
MakeCallback(RateCallback));
|
|
|
|
Simulator::Stop(simuTime);
|
|
Simulator::Run();
|
|
|
|
std::ofstream outfile("throughput-" + outputFileName + ".plt");
|
|
Gnuplot gnuplot = Gnuplot("throughput-" + outputFileName + ".eps", "Throughput");
|
|
gnuplot.SetTerminal("post eps color enhanced");
|
|
gnuplot.SetLegend("Time (seconds)", "Throughput (Mb/s)");
|
|
gnuplot.SetTitle("Throughput (AP to STA) vs time");
|
|
gnuplot.AddDataset(statistics.GetDatafile());
|
|
gnuplot.GenerateOutput(outfile);
|
|
|
|
if (manager == "ns3::ParfWifiManager" || manager == "ns3::AparfWifiManager" ||
|
|
manager == "ns3::RrpaaWifiManager")
|
|
{
|
|
std::ofstream outfile2("power-" + outputFileName + ".plt");
|
|
gnuplot = Gnuplot("power-" + outputFileName + ".eps", "Average Transmit Power");
|
|
gnuplot.SetTerminal("post eps color enhanced");
|
|
gnuplot.SetLegend("Time (seconds)", "Power (mW)");
|
|
gnuplot.SetTitle("Average transmit power (AP to STA) vs time");
|
|
gnuplot.AddDataset(statistics.GetPowerDatafile());
|
|
gnuplot.GenerateOutput(outfile2);
|
|
}
|
|
|
|
Simulator::Destroy();
|
|
|
|
return 0;
|
|
}
|