/usr/include/ns3.26/ns3/default-channel-scheduler.h is in libns3-dev 3.26+dfsg-1.
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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Junling Bu <linlinjavaer@gmail.com>
*/
#ifndef DEFAULT_CHANNEL_SCHEDULER_H
#define DEFAULT_CHANNEL_SCHEDULER_H
#include "wave-net-device.h"
namespace ns3 {
class WaveNetDevice;
/**
* \ingroup wave
* \brief This class uses a simple mechanism to assign channel access with following features:
* (1) only in the context of single-PHY device;
* (2) FCFS (First come First service) strategy, which seems against the description of
* the standard (preemptive strategy).
*/
class DefaultChannelScheduler : public ChannelScheduler
{
public:
static TypeId GetTypeId (void);
DefaultChannelScheduler ();
virtual ~DefaultChannelScheduler ();
/**
* \param device enable channel scheduler associated with WaveNetDevice
*/
virtual void SetWaveNetDevice (Ptr<WaveNetDevice> device);
/**
* \param channelNumber the specified channel number
* \return the type of current assigned channel access for the specific channel.
. */
virtual enum ChannelAccess GetAssignedAccessType (uint32_t channelNumber) const;
void NotifyCchSlotStart (Time duration);
void NotifySchSlotStart (Time duration);
void NotifyGuardSlotStart (Time duration, bool cchi);
private:
virtual void DoInitialize (void);
virtual void DoDispose (void);
/**
* \param channelNumber the specific channel
* \param immediate indicate whether channel switch to channel
* \return whether the channel access is assigned successfully
*
* This method will assign alternating access for SCHs and CCH.
*/
virtual bool AssignAlternatingAccess (uint32_t channelNumber, bool immediate);
/**
* \param channelNumber the specific channel
* \param immediate indicate whether channel switch to channel
* \return whether the channel access is assigned successfully
*
* This method will assign continuous SCH access CCH.
*/
virtual bool AssignContinuousAccess (uint32_t channelNumber, bool immediate);
/**
* \param channelNumber the specific channel
* \param immediate indicate whether channel switch to channel
* \return whether the channel access is assigned successfully
*
* This method will assign extended SCH access for SCHs.
*/
virtual bool AssignExtendedAccess (uint32_t channelNumber, uint32_t extends, bool immediate);
/**
* This method will assign default CCH access for CCH.
*/
virtual bool AssignDefaultCchAccess (void);
/**
* \param channelNumber indicating for which channel should release
* the assigned channel access resource.
*/
virtual bool ReleaseAccess (uint32_t channelNumber);
/**
* \param curChannelNumber switch from MAC activity for current channel
* \param nextChannelNumber switch to MAC activity for next channel
*/
void SwitchToNextChannel (uint32_t curChannelNumber, uint32_t nextChannelNumber);
Ptr<ChannelManager> m_manager;
Ptr<ChannelCoordinator> m_coordinator;
Ptr<WifiPhy> m_phy;
/**
* when m_channelAccess is ContinuousAccess, m_channelNumber
* is continuous channel number;
* when m_channelAccess is AlternatingAccess, m_channelNumber
* is SCH channel number, another alternating channel is CCH;
* when m_channelAccess is ExtendedAccess, m_channelNumber
* is extended access, extends is the number of extends access.
* when m_channelAccess is DefaultCchAccess, m_channelNumber is CCH.
*/
uint32_t m_channelNumber;
uint32_t m_extend;
EventId m_extendEvent;
enum ChannelAccess m_channelAccess;
EventId m_waitEvent;
uint32_t m_waitChannelNumber;
uint32_t m_waitExtend;
Ptr<ChannelCoordinationListener> m_coordinationListener;
};
}
#endif /* DEFAULT_CHANNEL_SCHEDULER_H */
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