A Discrete-Event Network Simulator
API
msdu-aggregator.h
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2009 MIRKO BANCHI
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Mirko Banchi <mk.banchi@gmail.com>
19  */
20 
21 #ifndef MSDU_AGGREGATOR_H
22 #define MSDU_AGGREGATOR_H
23 
24 #include "ns3/object.h"
25 #include "ns3/nstime.h"
26 #include "wifi-mode.h"
27 #include "qos-utils.h"
28 #include <map>
29 
30 namespace ns3 {
31 
32 class AmsduSubframeHeader;
33 class Packet;
34 class QosTxop;
35 class WifiMacQueueItem;
36 class WifiTxVector;
37 
42 class MsduAggregator : public Object
43 {
44 public:
46  typedef std::list<std::pair<Ptr<const Packet>, AmsduSubframeHeader> > DeaggregatedMsdus;
48  typedef std::list<std::pair<Ptr<const Packet>, AmsduSubframeHeader> >::const_iterator DeaggregatedMsdusCI;
50  typedef std::map<AcIndex, Ptr<QosTxop> > EdcaQueues;
51 
56  static TypeId GetTypeId (void);
57 
58  MsduAggregator ();
59  virtual ~MsduAggregator ();
60 
71  static uint16_t GetSizeIfAggregated (uint16_t msduSize, uint16_t amsduSize);
72 
101  Ptr<WifiMacQueueItem> GetNextAmsdu (Mac48Address recipient, uint8_t tid,
102  WifiTxVector txVector, uint32_t ampduSize = 0,
103  Time ppduDurationLimit = Time::Min ()) const;
104 
114  uint16_t GetMaxAmsduSize (Mac48Address recipient, uint8_t tid,
115  WifiModulationClass modulation) const;
116 
122  static DeaggregatedMsdus Deaggregate (Ptr<Packet> aggregatedPacket);
123 
129  void SetEdcaQueues (EdcaQueues map);
130 
140  static uint8_t CalculatePadding (uint16_t amsduSize);
141 
142 private:
144 };
145 
146 } //namespace ns3
147 
148 #endif /* MSDU_AGGREGATOR_H */
Simulation virtual time values and global simulation resolution.
Definition: nstime.h:103
Smart pointer class similar to boost::intrusive_ptr.
Definition: ptr.h:73
uint16_t GetMaxAmsduSize(Mac48Address recipient, uint8_t tid, WifiModulationClass modulation) const
Determine the maximum size for an A-MSDU of the given TID that can be sent to the given receiver when...
This class mimics the TXVECTOR which is to be passed to the PHY in order to define the parameters whi...
static Time Min()
Minimum representable Time Not to be confused with Min(Time,Time).
Definition: nstime.h:273
static DeaggregatedMsdus Deaggregate(Ptr< Packet > aggregatedPacket)
EdcaQueues m_edca
the map of EDCA queues
std::list< std::pair< Ptr< const Packet >, AmsduSubframeHeader > >::const_iterator DeaggregatedMsdusCI
DeaggregatedMsdusCI typedef.
void SetEdcaQueues(EdcaQueues map)
Set the map of EDCA queues.
std::list< std::pair< Ptr< const Packet >, AmsduSubframeHeader > > DeaggregatedMsdus
DeaggregatedMsdus typedef.
static TypeId GetTypeId(void)
Get the type ID.
static uint16_t GetSizeIfAggregated(uint16_t msduSize, uint16_t amsduSize)
Compute the size of the A-MSDU resulting from the aggregation of an MSDU of size msduSize and an A-MS...
Every class exported by the ns3 library is enclosed in the ns3 namespace.
an EUI-48 address
Definition: mac48-address.h:43
Headers for A-MSDU subframes.
WifiModulationClass
This enumeration defines the modulation classes per (Table 9-4 "Modulation classes"; IEEE 802...
Definition: wifi-mode.h:36
static uint8_t CalculatePadding(uint16_t amsduSize)
Calculate how much padding must be added to the end of an A-MSDU of the given size if a new MSDU is a...
Aggregator used to construct A-MSDUs.
A base class which provides memory management and object aggregation.
Definition: object.h:87
Ptr< WifiMacQueueItem > GetNextAmsdu(Mac48Address recipient, uint8_t tid, WifiTxVector txVector, uint32_t ampduSize=0, Time ppduDurationLimit=Time::Min()) const
Dequeue MSDUs to be transmitted to a given station and belonging to a given TID from the correspondin...
a unique identifier for an interface.
Definition: type-id.h:58
std::map< AcIndex, Ptr< QosTxop > > EdcaQueues
EDCA queues typedef.