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ARF.hpp

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/******************************************************************************
 * WiFiMac                                                                    *
 * This file is part of openWNS (open Wireless Network Simulator)
 * _____________________________________________________________________________
 *
 * Copyright (C) 2004-2007
 * Chair of Communication Networks (ComNets)
 * Kopernikusstr. 16, D-52074 Aachen, Germany
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 * fax: ++49-241-80-22242
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 * _____________________________________________________________________________
 *
 * openWNS is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 2 as published by the
 * Free Software Foundation;
 *
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 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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#ifndef WIFIMAC_LOWERMAC_RATEADAPTATIONSTRATEGIES_ARF_HPP
#define WIFIMAC_LOWERMAC_RATEADAPTATIONSTRATEGIES_ARF_HPP

#include <WIFIMAC/lowerMAC/rateAdaptationStrategies/IRateAdaptationStrategy.hpp>
#include <WIFIMAC/convergence/PhyUser.hpp>
#include <WIFIMAC/convergence/PhyMode.hpp>
#include <WIFIMAC/lowerMAC/Manager.hpp>

#include <WNS/ldk/Key.hpp>
#include <WNS/distribution/Uniform.hpp>
#include <WNS/logger/Logger.hpp>
#include <WNS/events/CanTimeout.hpp>

namespace wifimac { namespace lowerMAC { namespace rateAdaptationStrategies {

    class ARF:
        public IRateAdaptationStrategy,
        public wns::events::CanTimeout
    {
    public:
        ARF(
            const wns::pyconfig::View& _config,
            wns::service::dll::UnicastAddress _receiver,
            wifimac::management::PERInformationBase* _per,
            wifimac::management::SINRInformationBase* _sinr,
            wifimac::lowerMAC::Manager* _manager,
            wifimac::convergence::PhyUser* _phyUser,
            wns::logger::Logger* _logger);

        wifimac::convergence::PhyMode
        getPhyMode(size_t numTransmissions) const;

        wifimac::convergence::PhyMode
        getPhyMode(size_t numTransmissions,
                   const wns::Ratio lqm) const;

        virtual void
        setCurrentPhyMode(wifimac::convergence::PhyMode pm);

    private:
        void
        onTimeout();

        wifimac::management::PERInformationBase* per;
        const wns::service::dll::UnicastAddress myReceiver;
        const wns::simulator::Time arfTimer;
        const bool exponentialBackoff;
        const int initialSuccessThreshold;
        const int maxSuccessThreshold;
        bool timeout;
        int successThreshold;
        bool probePacket;

        struct Friends
        {
            wifimac::convergence::PhyUser* phyUser;
        } friends;

        wns::logger::Logger* logger;

        wifimac::convergence::PhyMode curPhyMode;
    };
}}}

#endif

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