/usr/include/ns3.27/ns3/lte-rlc-um.h is in libns3-dev 3.27+dfsg-1.
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/*
* Copyright (c) 2011 Centre Tecnologic de Telecomunicacions de Catalunya (CTTC)
*
* 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: Manuel Requena <manuel.requena@cttc.es>
*/
#ifndef LTE_RLC_UM_H
#define LTE_RLC_UM_H
#include "ns3/lte-rlc-sequence-number.h"
#include "ns3/lte-rlc.h"
#include <ns3/event-id.h>
#include <map>
namespace ns3 {
/**
* LTE RLC Unacknowledged Mode (UM), see 3GPP TS 36.322
*/
class LteRlcUm : public LteRlc
{
public:
LteRlcUm ();
virtual ~LteRlcUm ();
/**
* \brief Get the type ID.
* \return the object TypeId
*/
static TypeId GetTypeId (void);
virtual void DoDispose ();
/**
* RLC SAP
*
* \param p packet
*/
virtual void DoTransmitPdcpPdu (Ptr<Packet> p);
/**
* MAC SAP
*
* \param bytes the number of bytes
* \param layer the layer
* \param harqId the HARQ ID
* \param componentCarrierId component carrier ID
* \param rnti the RNTI
* \param lcid the LCID
*/
virtual void DoNotifyTxOpportunity (uint32_t bytes, uint8_t layer, uint8_t harqId, uint8_t componentCarrierId, uint16_t rnti, uint8_t lcid);
virtual void DoNotifyHarqDeliveryFailure ();
virtual void DoReceivePdu (Ptr<Packet> p, uint16_t rnti, uint8_t lcid);
private:
/// Expire reordering timer
void ExpireReorderingTimer (void);
/// Expire RBS timer
void ExpireRbsTimer (void);
/**
* Is inside reordering window function
*
* \param seqNumber the sequence number
* \returns true if inside the window
*/
bool IsInsideReorderingWindow (SequenceNumber10 seqNumber);
/// Reassemble outside window
void ReassembleOutsideWindow (void);
/**
* Reassemble SN interval function
*
* \param lowSeqNumber the low sequence number
* \param highSeqNumber the high sequence number
*/
void ReassembleSnInterval (SequenceNumber10 lowSeqNumber, SequenceNumber10 highSeqNumber);
/**
* Reassemble and deliver function
*
* \param packet the packet
*/
void ReassembleAndDeliver (Ptr<Packet> packet);
/// Report buffer status
void DoReportBufferStatus ();
private:
uint32_t m_maxTxBufferSize; ///< maximum transmit buffer status
uint32_t m_txBufferSize; ///< transmit buffer size
std::vector < Ptr<Packet> > m_txBuffer; ///< Transmission buffer
std::map <uint16_t, Ptr<Packet> > m_rxBuffer; ///< Reception buffer
std::vector < Ptr<Packet> > m_reasBuffer; ///< Reassembling buffer
std::list < Ptr<Packet> > m_sdusBuffer; ///< List of SDUs in a packet
/**
* State variables. See section 7.1 in TS 36.322
*/
SequenceNumber10 m_sequenceNumber; ///< VT(US)
SequenceNumber10 m_vrUr; ///< VR(UR)
SequenceNumber10 m_vrUx; ///< VR(UX)
SequenceNumber10 m_vrUh; ///< VR(UH)
/**
* Constants. See section 7.2 in TS 36.322
*/
uint16_t m_windowSize; ///< windows size
/**
* Timers. See section 7.3 in TS 36.322
*/
EventId m_reorderingTimer; ///< reordering timer
EventId m_rbsTimer; ///< RBS timer
/**
* Reassembling state
*/
typedef enum { NONE = 0,
WAITING_S0_FULL = 1,
WAITING_SI_SF = 2 } ReassemblingState_t;
ReassemblingState_t m_reassemblingState; ///< reassembling state
Ptr<Packet> m_keepS0; ///< keep S0
/**
* Expected Sequence Number
*/
SequenceNumber10 m_expectedSeqNumber;
};
} // namespace ns3
#endif // LTE_RLC_UM_H
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