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A Discrete-Event Network Simulator
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API |
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A Discrete-Event Network Simulator
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API |
Manage a set of ns3::DcfStateHandle a set of independent ns3::DcfState, each of which represents a single DCF within a MAC stack. More...
#include "dcf-manager.h"
Inheritance diagram for ns3::DcfManager: Collaboration diagram for ns3::DcfManager:Public Member Functions | |
| DcfManager () | |
| virtual | ~DcfManager () |
| void | Add (Ptr< DcfState > dcf) |
| Time | GetEifsNoDifs () const |
| void | NotifyAckTimeoutResetNow () |
| Notify that ACK timer has resetted. More... | |
| void | NotifyAckTimeoutStartNow (Time duration) |
| Notify that ACK timer has started for the given duration. More... | |
| void | NotifyCtsTimeoutResetNow () |
| Notify that CTS timer has resetted. More... | |
| void | NotifyCtsTimeoutStartNow (Time duration) |
| Notify that CTS timer has started for the given duration. More... | |
| void | NotifyMaybeCcaBusyStartNow (Time duration) |
| void | NotifyNavResetNow (Time duration) |
| void | NotifyNavStartNow (Time duration) |
| void | NotifyRxEndErrorNow (void) |
| Notify the DCF that a packet reception was just completed unsuccessfully. More... | |
| void | NotifyRxEndOkNow (void) |
| Notify the DCF that a packet reception was just completed successfully. More... | |
| void | NotifyRxStartNow (Time duration) |
| void | NotifySleepNow (void) |
| Notify the DCF that the device has been put in sleep mode. More... | |
| void | NotifySwitchingStartNow (Time duration) |
| void | NotifyTxStartNow (Time duration) |
| void | NotifyWakeupNow (void) |
| Notify the DCF that the device has been resumed from sleep mode. More... | |
| void | RemovePhyListener (Ptr< WifiPhy > phy) |
| Remove current registered listener for Phy events. More... | |
| void | RequestAccess (Ptr< DcfState > state) |
| void | SetEifsNoDifs (Time eifsNoDifs) |
| void | SetSifs (Time sifs) |
| void | SetSlot (Time slotTime) |
| void | SetupLow (Ptr< MacLow > low) |
| Set up listener for MacLow events. More... | |
| void | SetupPhyListener (Ptr< WifiPhy > phy) |
| Set up listener for Phy events. More... | |
| Public Member Functions inherited from ns3::Object | |
| Object () | |
| Constructor. More... | |
| virtual | ~Object () |
| Destructor. More... | |
| void | AggregateObject (Ptr< Object > other) |
| Aggregate two Objects together. More... | |
| void | Dispose (void) |
| Dispose of this Object. More... | |
| AggregateIterator | GetAggregateIterator (void) const |
| Get an iterator to the Objects aggregated to this one. More... | |
| virtual TypeId | GetInstanceTypeId (void) const |
| Get the most derived TypeId for this Object. More... | |
| template<typename T > | |
| Ptr< T > | GetObject (void) const |
| Get a pointer to the requested aggregated Object. More... | |
| template<typename T > | |
| Ptr< T > | GetObject (TypeId tid) const |
| Get a pointer to the requested aggregated Object by TypeId. More... | |
| void | Initialize (void) |
| Invoke DoInitialize on all Objects aggregated to this one. More... | |
| bool | IsInitialized (void) const |
| Check if the object has been initialized. More... | |
| Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter > | |
| SimpleRefCount () | |
| Default constructor. More... | |
| SimpleRefCount (const SimpleRefCount &o) | |
| Copy constructor. More... | |
| uint32_t | GetReferenceCount (void) const |
| Get the reference count of the object. More... | |
| SimpleRefCount & | operator= (const SimpleRefCount &o) |
| Assignment operator. More... | |
| void | Ref (void) const |
| Increment the reference count. More... | |
| void | Unref (void) const |
| Decrement the reference count. More... | |
| Public Member Functions inherited from ns3::ObjectBase | |
| virtual | ~ObjectBase () |
| Virtual destructor. More... | |
| void | GetAttribute (std::string name, AttributeValue &value) const |
| Get the value of an attribute, raising fatal errors if unsuccessful. More... | |
| bool | GetAttributeFailSafe (std::string name, AttributeValue &value) const |
| Get the value of an attribute without raising erros. More... | |
| void | SetAttribute (std::string name, const AttributeValue &value) |
| Set a single attribute, raising fatal errors if unsuccessful. More... | |
| bool | SetAttributeFailSafe (std::string name, const AttributeValue &value) |
| Set a single attribute without raising errors. More... | |
| bool | TraceConnect (std::string name, std::string context, const CallbackBase &cb) |
| Connect a TraceSource to a Callback with a context. More... | |
| bool | TraceConnectWithoutContext (std::string name, const CallbackBase &cb) |
| Connect a TraceSource to a Callback without a context. More... | |
| bool | TraceDisconnect (std::string name, std::string context, const CallbackBase &cb) |
| Disconnect from a TraceSource a Callback previously connected with a context. More... | |
| bool | TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb) |
| Disconnect from a TraceSource a Callback previously connected without a context. More... | |
Protected Member Functions | |
| void | DoDispose (void) |
| Destructor implementation. More... | |
| Protected Member Functions inherited from ns3::Object | |
| Object (const Object &o) | |
| Copy an Object. More... | |
| virtual void | DoInitialize (void) |
| Initialize() implementation. More... | |
| virtual void | NotifyNewAggregate (void) |
| Notify all Objects aggregated to this one of a new Object being aggregated. More... | |
| Protected Member Functions inherited from ns3::ObjectBase | |
| void | ConstructSelf (const AttributeConstructionList &attributes) |
| Complete construction of ObjectBase; invoked by derived classes. More... | |
| virtual void | NotifyConstructionCompleted (void) |
| Notifier called once the ObjectBase is fully constructed. More... | |
Private Types | |
| typedef std::vector< Ptr< DcfState > > | States |
| typedef for a vector of DcfStates More... | |
Private Member Functions | |
| void | AccessTimeout (void) |
| Called when access timeout should occur (e.g. More... | |
| void | DoGrantAccess (void) |
| Grant access to DCF. More... | |
| void | DoRestartAccessTimeoutIfNeeded (void) |
| Time | GetAccessGrantStart (void) const |
| Access will never be granted to the medium before the time returned by this method. More... | |
| Time | GetBackoffEndFor (Ptr< DcfState > state) |
| Return the time when the backoff procedure ended (or will ended) for the given DcfState. More... | |
| Time | GetBackoffStartFor (Ptr< DcfState > state) |
| Return the time when the backoff procedure started for the given DcfState. More... | |
| bool | IsBusy (void) const |
| Check if the device is busy sending or receiving, or NAV or CCA busy. More... | |
| bool | IsWithinAifs (Ptr< DcfState > state) const |
| Check if the device is between frames (in DIFS or AIFS interval) More... | |
| Time | MostRecent (Time a, Time b) const |
| Return the most recent time. More... | |
| Time | MostRecent (Time a, Time b, Time c) const |
| Return the most recent time. More... | |
| Time | MostRecent (Time a, Time b, Time c, Time d) const |
| Return the most recent time. More... | |
| Time | MostRecent (Time a, Time b, Time c, Time d, Time e, Time f) const |
| Return the most recent time. More... | |
| Time | MostRecent (Time a, Time b, Time c, Time d, Time e, Time f, Time g) const |
| Return the most recent time. More... | |
| void | UpdateBackoff (void) |
| Update backoff slots for all DcfStates. More... | |
Private Attributes | |
| EventId | m_accessTimeout |
| the access timeout ID More... | |
| Time | m_eifsNoDifs |
| EIFS no DIFS time. More... | |
| Time | m_lastAckTimeoutEnd |
| the last ACK timeout end time More... | |
| Time | m_lastBusyDuration |
| the last busy duration time More... | |
| Time | m_lastBusyStart |
| the last busy start time More... | |
| Time | m_lastCtsTimeoutEnd |
| the last CTS timeout end time More... | |
| Time | m_lastNavDuration |
| the last NAV duration time More... | |
| Time | m_lastNavStart |
| the last NAV start time More... | |
| Time | m_lastRxDuration |
| the last receive duration time More... | |
| Time | m_lastRxEnd |
| the last receive end time More... | |
| bool | m_lastRxReceivedOk |
| the last receive OK More... | |
| Time | m_lastRxStart |
| the last receive start time More... | |
| Time | m_lastSwitchingDuration |
| the last switching duration time More... | |
| Time | m_lastSwitchingStart |
| the last switching start time More... | |
| Time | m_lastTxDuration |
| the last transmit duration time More... | |
| Time | m_lastTxStart |
| the last transmit start time More... | |
| PhyListener * | m_phyListener |
| the phy listener More... | |
| bool | m_rxing |
| flag whether it is in receiving state More... | |
| Time | m_sifs |
| the SIFS time More... | |
| bool | m_sleeping |
| flag whether it is in sleeping state More... | |
| uint32_t | m_slotTimeUs |
| the slot time in microseconds More... | |
| States | m_states |
| the DCF states More... | |
Additional Inherited Members | |
| Static Public Member Functions inherited from ns3::Object | |
| static TypeId | GetTypeId (void) |
| Register this type. More... | |
| Static Public Member Functions inherited from ns3::ObjectBase | |
| static TypeId | GetTypeId (void) |
| Get the type ID. More... | |
| Related Functions inherited from ns3::ObjectBase | |
| static TypeId | GetObjectIid (void) |
| Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly. More... | |
Manage a set of ns3::DcfState
Handle a set of independent ns3::DcfState, each of which represents a single DCF within a MAC stack.
Each ns3::DcfState has a priority implicitely associated with it (the priority is determined when the ns3::DcfState is added to the DcfManager: the first DcfState to be added gets the highest priority, the second, the second highest priority, and so on.) which is used to handle "internal" collisions. i.e., when two local DcfState are expected to get access to the medium at the same time, the highest priority local DcfState wins access to the medium and the other DcfState suffers a "internal" collision.
Definition at line 51 of file dcf-manager.h.
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typedef for a vector of DcfStates
Definition at line 328 of file dcf-manager.h.
| ns3::DcfManager::DcfManager | ( | ) |
Definition at line 89 of file dcf-manager.cc.
References NS_LOG_FUNCTION.
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Definition at line 113 of file dcf-manager.cc.
References m_phyListener.
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Called when access timeout should occur (e.g.
backoff procedure expired).
Definition at line 395 of file dcf-manager.cc.
References DoGrantAccess(), DoRestartAccessTimeoutIfNeeded(), NS_LOG_FUNCTION, and UpdateBackoff().
Referenced by DoRestartAccessTimeoutIfNeeded().
Here is the call graph for this function: Here is the caller graph for this function:| dcf | a new DcfState. |
The DcfManager does not take ownership of this pointer so, the callee must make sure that the DcfState pointer will stay valid as long as the DcfManager is valid. Note that the order in which DcfState objects are added to a DcfManager matters: the first DcfState added has the highest priority, the second DcfState added, has the second highest priority, etc.
Definition at line 190 of file dcf-manager.cc.
References m_states, and NS_LOG_FUNCTION.
Referenced by DcfManagerTest::AddDcfState(), and ns3::DcaTxop::SetManager().
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Destructor implementation.
This method is called by Dispose() or by the Object's destructor, whichever comes first.
Subclasses are expected to implement their real destruction code in an overriden version of this method and chain up to their parent's implementation once they are done. i.e, for simplicity, the destructor of every subclass should be empty and its content should be moved to the associated DoDispose() method.
It is safe to call GetObject() from within this method.
Reimplemented from ns3::Object.
Definition at line 120 of file dcf-manager.cc.
References m_states, and NS_LOG_FUNCTION.
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Grant access to DCF.
This is the first dcf we find with an expired backoff and which needs access to the medium. i.e., it has data to send.
all other dcfs with a lower priority whose backoff has expired and which needed access to the medium must be notified that we did get an internal collision.
Now, we notify all of these changes in one go. It is necessary to perform first the calculations of which states are colliding and then only apply the changes because applying the changes through notification could change the global state of the manager, and, thus, could change the result of the calculations.
Definition at line 340 of file dcf-manager.cc.
References GetBackoffEndFor(), ns3::DcfState::GetBackoffSlots(), ns3::DcfState::IsAccessRequested(), m_states, ns3::DcfState::NotifyAccessGranted(), ns3::Simulator::Now(), NS_LOG_DEBUG, and NS_LOG_FUNCTION.
Referenced by AccessTimeout(), and RequestAccess().
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Is there a DcfState which needs to access the medium, and, if there is one, how many slots for AIFS+backoff does it require ?
Definition at line 500 of file dcf-manager.cc.
References AccessTimeout(), ns3::EventId::Cancel(), GetBackoffEndFor(), ns3::Simulator::GetDelayLeft(), ns3::Simulator::GetMaximumSimulationTime(), ns3::DcfState::IsAccessRequested(), ns3::EventId::IsExpired(), ns3::EventId::IsRunning(), m_accessTimeout, m_states, min, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::Simulator::Schedule().
Referenced by AccessTimeout(), NotifyAckTimeoutResetNow(), NotifyCtsTimeoutResetNow(), NotifyNavResetNow(), and RequestAccess().
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Access will never be granted to the medium before the time returned by this method.
Definition at line 404 of file dcf-manager.cc.
References m_eifsNoDifs, m_lastAckTimeoutEnd, m_lastBusyDuration, m_lastBusyStart, m_lastCtsTimeoutEnd, m_lastNavDuration, m_lastNavStart, m_lastRxDuration, m_lastRxEnd, m_lastRxReceivedOk, m_lastRxStart, m_lastSwitchingDuration, m_lastSwitchingStart, m_lastTxDuration, m_lastTxStart, m_rxing, m_sifs, MostRecent(), NS_LOG_FUNCTION, and NS_LOG_INFO.
Referenced by GetBackoffStartFor(), and IsWithinAifs().
Here is the call graph for this function: Here is the caller graph for this function:Return the time when the backoff procedure ended (or will ended) for the given DcfState.
| state |
Definition at line 453 of file dcf-manager.cc.
References ns3::Time::As(), ns3::DcfState::GetBackoffSlots(), GetBackoffStartFor(), m_slotTimeUs, ns3::MicroSeconds(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::Time::US.
Referenced by DoGrantAccess(), and DoRestartAccessTimeoutIfNeeded().
Here is the call graph for this function: Here is the caller graph for this function:Return the time when the backoff procedure started for the given DcfState.
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Definition at line 443 of file dcf-manager.cc.
References GetAccessGrantStart(), ns3::DcfState::GetAifsn(), ns3::DcfState::GetBackoffStart(), m_slotTimeUs, ns3::MicroSeconds(), MostRecent(), and NS_LOG_FUNCTION.
Referenced by GetBackoffEndFor(), and UpdateBackoff().
Here is the call graph for this function: Here is the caller graph for this function:| Time ns3::DcfManager::GetEifsNoDifs | ( | ) | const |
Definition at line 183 of file dcf-manager.cc.
References m_eifsNoDifs, and NS_LOG_FUNCTION.
Referenced by ns3::RegularWifiMac::GetEifsNoDifs().
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Check if the device is busy sending or receiving, or NAV or CCA busy.
Definition at line 249 of file dcf-manager.cc.
References m_lastBusyDuration, m_lastBusyStart, m_lastNavDuration, m_lastNavStart, m_lastTxDuration, m_lastTxStart, m_rxing, ns3::Simulator::Now(), and NS_LOG_FUNCTION.
Referenced by RequestAccess().
Here is the call graph for this function: Here is the caller graph for this function:Check if the device is between frames (in DIFS or AIFS interval)
| state | the state to check |
Definition at line 278 of file dcf-manager.cc.
References GetAccessGrantStart(), ns3::DcfState::GetAifsn(), ns3::Time::GetSeconds(), m_slotTimeUs, ns3::MicroSeconds(), ns3::Simulator::Now(), NS_LOG_DEBUG, and NS_LOG_FUNCTION.
Referenced by RequestAccess().
Here is the call graph for this function: Here is the caller graph for this function:Return the most recent time.
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Definition at line 197 of file dcf-manager.cc.
References ns3::Max(), and NS_LOG_FUNCTION.
Referenced by GetAccessGrantStart(), and GetBackoffStartFor().
Here is the call graph for this function: Here is the caller graph for this function:Return the most recent time.
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Definition at line 204 of file dcf-manager.cc.
References ns3::Max(), and NS_LOG_FUNCTION.
Here is the call graph for this function:Return the most recent time.
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Definition at line 214 of file dcf-manager.cc.
References f(), ns3::Max(), and NS_LOG_FUNCTION.
Here is the call graph for this function:Return the most recent time.
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Definition at line 224 of file dcf-manager.cc.
References ns3::Max(), and NS_LOG_FUNCTION.
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Return the most recent time.
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Definition at line 236 of file dcf-manager.cc.
References ns3::Max(), and NS_LOG_FUNCTION.
Here is the call graph for this function:| void ns3::DcfManager::NotifyAckTimeoutResetNow | ( | ) |
Notify that ACK timer has resetted.
Definition at line 742 of file dcf-manager.cc.
References DoRestartAccessTimeoutIfNeeded(), m_lastAckTimeoutEnd, ns3::Simulator::Now(), and NS_LOG_FUNCTION.
Here is the call graph for this function:| void ns3::DcfManager::NotifyAckTimeoutStartNow | ( | Time | duration | ) |
Notify that ACK timer has started for the given duration.
| duration |
Definition at line 734 of file dcf-manager.cc.
References m_lastAckTimeoutEnd, ns3::Simulator::Now(), NS_ASSERT, and NS_LOG_FUNCTION.
Referenced by DcfManagerTest::NotifyAccessGranted().
Here is the call graph for this function: Here is the caller graph for this function:| void ns3::DcfManager::NotifyCtsTimeoutResetNow | ( | ) |
Notify that CTS timer has resetted.
Definition at line 757 of file dcf-manager.cc.
References DoRestartAccessTimeoutIfNeeded(), m_lastCtsTimeoutEnd, ns3::Simulator::Now(), and NS_LOG_FUNCTION.
Here is the call graph for this function:| void ns3::DcfManager::NotifyCtsTimeoutStartNow | ( | Time | duration | ) |
Notify that CTS timer has started for the given duration.
| duration |
Definition at line 750 of file dcf-manager.cc.
References m_lastCtsTimeoutEnd, ns3::Simulator::Now(), and NS_LOG_FUNCTION.
Here is the call graph for this function:| void ns3::DcfManager::NotifyMaybeCcaBusyStartNow | ( | Time | duration | ) |
| duration | expected duration of cca busy period |
Notify the DCF that a CCA busy period has just started.
Definition at line 592 of file dcf-manager.cc.
References m_lastBusyDuration, m_lastBusyStart, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and UpdateBackoff().
Referenced by ns3::OcbWifiMac::MakeVirtualBusy(), and ns3::PhyListener::NotifyMaybeCcaBusyStart().
Here is the call graph for this function: Here is the caller graph for this function:| void ns3::DcfManager::NotifyNavResetNow | ( | Time | duration | ) |
| duration | the value of the received NAV. |
Called at end of rx
If the nav reset indicates an end-of-nav which is earlier than the previous end-of-nav, the expected end of backoff might be later than previously thought so, we might need to restart a new access timeout.
Definition at line 701 of file dcf-manager.cc.
References DoRestartAccessTimeoutIfNeeded(), m_lastNavDuration, m_lastNavStart, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and UpdateBackoff().
Referenced by ns3::MeshWifiInterfaceMac::SwitchFrequencyChannel().
Here is the call graph for this function: Here is the caller graph for this function:| void ns3::DcfManager::NotifyNavStartNow | ( | Time | duration | ) |
| duration | the value of the received NAV. |
Called at end of rx
Definition at line 718 of file dcf-manager.cc.
References m_lastNavDuration, m_lastNavStart, ns3::Simulator::Now(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, and UpdateBackoff().
Here is the call graph for this function:| void ns3::DcfManager::NotifyRxEndErrorNow | ( | void | ) |
Notify the DCF that a packet reception was just completed unsuccessfully.
Definition at line 562 of file dcf-manager.cc.
References m_lastRxEnd, m_lastRxReceivedOk, m_rxing, ns3::Simulator::Now(), NS_LOG_DEBUG, and NS_LOG_FUNCTION.
Referenced by ns3::PhyListener::NotifyRxEndError().
Here is the call graph for this function: Here is the caller graph for this function:| void ns3::DcfManager::NotifyRxEndOkNow | ( | void | ) |
Notify the DCF that a packet reception was just completed successfully.
Definition at line 552 of file dcf-manager.cc.
References m_lastRxEnd, m_lastRxReceivedOk, m_rxing, ns3::Simulator::Now(), NS_LOG_DEBUG, and NS_LOG_FUNCTION.
Referenced by ns3::PhyListener::NotifyRxEndOk().
Here is the call graph for this function: Here is the caller graph for this function:| void ns3::DcfManager::NotifyRxStartNow | ( | Time | duration | ) |
| duration | expected duration of reception |
Notify the DCF that a packet reception started for the expected duration.
Definition at line 541 of file dcf-manager.cc.
References m_lastRxDuration, m_lastRxStart, m_rxing, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and UpdateBackoff().
Referenced by ns3::PhyListener::NotifyRxStart().
Here is the call graph for this function: Here is the caller graph for this function:| void ns3::DcfManager::NotifySleepNow | ( | void | ) |
Notify the DCF that the device has been put in sleep mode.
Definition at line 662 of file dcf-manager.cc.
References ns3::EventId::Cancel(), ns3::EventId::IsRunning(), m_accessTimeout, m_sleeping, m_states, ns3::DcfState::NotifySleep(), and NS_LOG_FUNCTION.
Referenced by ns3::PhyListener::NotifySleep(), and ns3::OcbWifiMac::Suspend().
Here is the call graph for this function: Here is the caller graph for this function:| void ns3::DcfManager::NotifySwitchingStartNow | ( | Time | duration | ) |
| duration | expected duration of channel switching period |
Notify the DCF that a channel switching period has just started. During switching state, new packets can be enqueued in DcaTxop/EdcaTxop but they won't access to the medium until the end of the channel switching.
Definition at line 602 of file dcf-manager.cc.
References ns3::EventId::Cancel(), ns3::DcfState::GetBackoffSlots(), ns3::EventId::IsRunning(), ns3::DcfState::m_accessRequested, m_accessTimeout, m_lastAckTimeoutEnd, m_lastBusyDuration, m_lastBusyStart, m_lastCtsTimeoutEnd, m_lastNavDuration, m_lastNavStart, m_lastRxDuration, m_lastRxEnd, m_lastRxReceivedOk, m_lastRxStart, m_lastSwitchingDuration, m_lastSwitchingStart, m_lastTxDuration, m_lastTxStart, m_rxing, m_states, ns3::DcfState::NotifyChannelSwitching(), ns3::Simulator::Now(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, ns3::DcfState::ResetCw(), and ns3::DcfState::UpdateBackoffSlotsNow().
Referenced by ns3::PhyListener::NotifySwitchingStart(), and ns3::OcbWifiMac::Reset().
Here is the call graph for this function: Here is the caller graph for this function:| void ns3::DcfManager::NotifyTxStartNow | ( | Time | duration | ) |
| duration | expected duration of transmission |
Notify the DCF that a packet transmission was just started and is expected to last for the specified duration.
Definition at line 572 of file dcf-manager.cc.
References m_lastRxDuration, m_lastRxEnd, m_lastRxReceivedOk, m_lastRxStart, m_lastTxDuration, m_lastTxStart, m_rxing, m_sifs, ns3::Simulator::Now(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, and UpdateBackoff().
Referenced by DcfManagerTest::NotifyAccessGranted(), and ns3::PhyListener::NotifyTxStart().
Here is the call graph for this function: Here is the caller graph for this function:| void ns3::DcfManager::NotifyWakeupNow | ( | void | ) |
Notify the DCF that the device has been resumed from sleep mode.
Definition at line 681 of file dcf-manager.cc.
References ns3::DcfState::GetBackoffSlots(), ns3::DcfState::m_accessRequested, m_sleeping, m_states, ns3::DcfState::NotifyWakeUp(), ns3::Simulator::Now(), NS_ASSERT, NS_LOG_FUNCTION, ns3::DcfState::ResetCw(), and ns3::DcfState::UpdateBackoffSlotsNow().
Referenced by ns3::PhyListener::NotifyWakeup(), and ns3::OcbWifiMac::Resume().
Here is the call graph for this function: Here is the caller graph for this function:Remove current registered listener for Phy events.
| phy |
Definition at line 143 of file dcf-manager.cc.
References m_phyListener, NS_LOG_FUNCTION, and ns3::WifiPhy::UnregisterListener().
Referenced by ns3::RegularWifiMac::ResetWifiPhy().
Here is the call graph for this function: Here is the caller graph for this function:| state | a DcfState |
Notify the DcfManager that a specific DcfState needs access to the medium. The DcfManager is then responsible for starting an access timer and, invoking DcfState::DoNotifyAccessGranted when the access is granted if it ever gets granted.
If there is a collision, generate a backoff by notifying the collision to the user.
Definition at line 292 of file dcf-manager.cc.
References DoGrantAccess(), DoRestartAccessTimeoutIfNeeded(), ns3::DcfState::GetBackoffSlots(), ns3::DcfState::IsAccessRequested(), IsBusy(), IsWithinAifs(), m_lastTxDuration, m_lastTxStart, m_sleeping, ns3::DcfState::NotifyAccessRequested(), ns3::DcfState::NotifyCollision(), ns3::DcfState::NotifyInternalCollision(), ns3::Simulator::Now(), NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, and UpdateBackoff().
Referenced by DcfManagerTest::DoAccessRequest(), ns3::EdcaTxopN::RestartAccessIfNeeded(), ns3::DcaTxop::RestartAccessIfNeeded(), ns3::EdcaTxopN::StartAccessIfNeeded(), and ns3::DcaTxop::StartAccessIfNeeded().
Here is the call graph for this function: Here is the caller graph for this function:| void ns3::DcfManager::SetEifsNoDifs | ( | Time | eifsNoDifs | ) |
| eifsNoDifs | the duration of a EIFS minus the duration of DIFS. |
It is a bad idea to call this method after RequestAccess or one of the Notify methods has been invoked.
Definition at line 176 of file dcf-manager.cc.
References m_eifsNoDifs, and NS_LOG_FUNCTION.
Referenced by ns3::RegularWifiMac::SetEifsNoDifs(), and DcfManagerTest::StartTest().
Here is the caller graph for this function:| void ns3::DcfManager::SetSifs | ( | Time | sifs | ) |
| sifs | the duration of a SIFS. |
It is a bad idea to call this method after RequestAccess or one of the Notify methods has been invoked.
Definition at line 169 of file dcf-manager.cc.
References m_sifs, and NS_LOG_FUNCTION.
Referenced by ns3::RegularWifiMac::SetSifs(), and DcfManagerTest::StartTest().
Here is the caller graph for this function:| void ns3::DcfManager::SetSlot | ( | Time | slotTime | ) |
| slotTime | the duration of a slot. |
It is a bad idea to call this method after RequestAccess or one of the Notify methods has been invoked.
Definition at line 162 of file dcf-manager.cc.
References ns3::Time::GetMicroSeconds(), m_slotTimeUs, and NS_LOG_FUNCTION.
Referenced by AmpduAggregationTest::DoRun(), ns3::RegularWifiMac::SetSlot(), and DcfManagerTest::StartTest().
Here is the call graph for this function: Here is the caller graph for this function:Set up listener for MacLow events.
| low |
Definition at line 155 of file dcf-manager.cc.
References NS_LOG_FUNCTION, and ns3::MacLow::RegisterDcf().
Referenced by AmpduAggregationTest::DoRun(), ns3::OcbWifiMac::EnableForWave(), and ns3::RegularWifiMac::RegularWifiMac().
Here is the call graph for this function: Here is the caller graph for this function:Set up listener for Phy events.
| phy |
Definition at line 131 of file dcf-manager.cc.
References m_phyListener, NS_LOG_FUNCTION, and ns3::WifiPhy::RegisterListener().
Referenced by AmpduAggregationTest::DoRun(), and ns3::RegularWifiMac::SetWifiPhy().
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Update backoff slots for all DcfStates.
Definition at line 463 of file dcf-manager.cc.
References ns3::DcfState::GetBackoffSlots(), GetBackoffStartFor(), ns3::DcfState::IsEdca(), m_slotTimeUs, m_states, ns3::MicroSeconds(), min, ns3::Simulator::Now(), NS_LOG_DEBUG, NS_LOG_FUNCTION, and ns3::DcfState::UpdateBackoffSlotsNow().
Referenced by AccessTimeout(), NotifyMaybeCcaBusyStartNow(), NotifyNavResetNow(), NotifyNavStartNow(), NotifyRxStartNow(), NotifyTxStartNow(), and RequestAccess().
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the access timeout ID
Definition at line 348 of file dcf-manager.h.
Referenced by DoRestartAccessTimeoutIfNeeded(), NotifySleepNow(), and NotifySwitchingStartNow().
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EIFS no DIFS time.
Definition at line 347 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), GetEifsNoDifs(), and SetEifsNoDifs().
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the last ACK timeout end time
Definition at line 331 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), NotifyAckTimeoutResetNow(), NotifyAckTimeoutStartNow(), and NotifySwitchingStartNow().
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the last busy duration time
Definition at line 342 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), IsBusy(), NotifyMaybeCcaBusyStartNow(), and NotifySwitchingStartNow().
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the last busy start time
Definition at line 341 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), IsBusy(), NotifyMaybeCcaBusyStartNow(), and NotifySwitchingStartNow().
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the last CTS timeout end time
Definition at line 332 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), NotifyCtsTimeoutResetNow(), NotifyCtsTimeoutStartNow(), and NotifySwitchingStartNow().
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the last NAV duration time
Definition at line 334 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), IsBusy(), NotifyNavResetNow(), NotifyNavStartNow(), and NotifySwitchingStartNow().
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the last NAV start time
Definition at line 333 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), IsBusy(), NotifyNavResetNow(), NotifyNavStartNow(), and NotifySwitchingStartNow().
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the last receive duration time
Definition at line 336 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), NotifyRxStartNow(), NotifySwitchingStartNow(), and NotifyTxStartNow().
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the last receive end time
Definition at line 338 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), NotifyRxEndErrorNow(), NotifyRxEndOkNow(), NotifySwitchingStartNow(), and NotifyTxStartNow().
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the last receive OK
Definition at line 337 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), NotifyRxEndErrorNow(), NotifyRxEndOkNow(), NotifySwitchingStartNow(), and NotifyTxStartNow().
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the last receive start time
Definition at line 335 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), NotifyRxStartNow(), NotifySwitchingStartNow(), and NotifyTxStartNow().
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the last switching duration time
Definition at line 344 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), and NotifySwitchingStartNow().
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the last switching start time
Definition at line 343 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), and NotifySwitchingStartNow().
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the last transmit duration time
Definition at line 340 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), IsBusy(), NotifySwitchingStartNow(), NotifyTxStartNow(), and RequestAccess().
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the last transmit start time
Definition at line 339 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), IsBusy(), NotifySwitchingStartNow(), NotifyTxStartNow(), and RequestAccess().
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the phy listener
Definition at line 351 of file dcf-manager.h.
Referenced by RemovePhyListener(), SetupPhyListener(), and ~DcfManager().
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flag whether it is in receiving state
Definition at line 345 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), IsBusy(), NotifyRxEndErrorNow(), NotifyRxEndOkNow(), NotifyRxStartNow(), NotifySwitchingStartNow(), and NotifyTxStartNow().
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the SIFS time
Definition at line 350 of file dcf-manager.h.
Referenced by GetAccessGrantStart(), NotifyTxStartNow(), and SetSifs().
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flag whether it is in sleeping state
Definition at line 346 of file dcf-manager.h.
Referenced by NotifySleepNow(), NotifyWakeupNow(), and RequestAccess().
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the slot time in microseconds
Definition at line 349 of file dcf-manager.h.
Referenced by GetBackoffEndFor(), GetBackoffStartFor(), IsWithinAifs(), SetSlot(), and UpdateBackoff().
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the DCF states
Definition at line 330 of file dcf-manager.h.
Referenced by Add(), DoDispose(), DoGrantAccess(), DoRestartAccessTimeoutIfNeeded(), NotifySleepNow(), NotifySwitchingStartNow(), NotifyWakeupNow(), and UpdateBackoff().
1.8.9.1 
