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ns3::RateErrorModel Class Reference

Determine which packets are errored corresponding to an underlying distribution, rate, and unit. More...

#include <error-model.h>

+ Inheritance diagram for ns3::RateErrorModel:
+ Collaboration diagram for ns3::RateErrorModel:

Public Types

enum  ErrorUnit { ERROR_UNIT_BIT, ERROR_UNIT_BYTE, ERROR_UNIT_PACKET }
 Error unit. More...
 

Public Member Functions

 RateErrorModel ()
 
virtual ~RateErrorModel ()
 
int64_t AssignStreams (int64_t stream)
 Assign a fixed random variable stream number to the random variables used by this model. More...
 
double GetRate (void) const
 
RateErrorModel::ErrorUnit GetUnit (void) const
 
void SetRandomVariable (Ptr< RandomVariableStream >)
 
void SetRate (double rate)
 
void SetUnit (enum ErrorUnit error_unit)
 
- Public Member Functions inherited from ns3::ErrorModel
 ErrorModel ()
 
virtual ~ErrorModel ()
 
void Disable (void)
 Disable the error model. More...
 
void Enable (void)
 Enable the error model. More...
 
bool IsCorrupt (Ptr< Packet > pkt)
 Note: Depending on the error model, this function may or may not alter the contents of the packet upon returning true. More...
 
bool IsEnabled (void) const
 
void Reset (void)
 Reset any state associated with the error model. More...
 
- Public Member Functions inherited from ns3::Object
 Object ()
 
virtual ~Object ()
 
void AggregateObject (Ptr< Object > other)
 
void Dispose (void)
 Run the DoDispose methods of this object and all the objects aggregated to it. More...
 
AggregateIterator GetAggregateIterator (void) const
 
virtual TypeId GetInstanceTypeId (void) const
 
template<typename T >
Ptr< T > GetObject (void) const
 
template<typename T >
Ptr< T > GetObject (TypeId tid) const
 
void Initialize (void)
 This method calls the virtual DoInitialize method on all the objects aggregated to this object. More...
 
- Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
 SimpleRefCount ()
 Constructor. More...
 
 SimpleRefCount (const SimpleRefCount &o)
 Copy constructor. More...
 
uint32_t GetReferenceCount (void) const
 Get the reference count of the object. More...
 
SimpleRefCountoperator= (const SimpleRefCount &o)
 Assignment. 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
 
bool GetAttributeFailSafe (std::string name, AttributeValue &attribute) const
 
void SetAttribute (std::string name, const AttributeValue &value)
 
bool SetAttributeFailSafe (std::string name, const AttributeValue &value)
 
bool TraceConnect (std::string name, std::string context, const CallbackBase &cb)
 
bool TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
 
bool TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
 
bool TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
 

Static Public Member Functions

static TypeId GetTypeId (void)
 Get the type ID. More...
 
- Static Public Member Functions inherited from ns3::ErrorModel
static TypeId GetTypeId (void)
 Get the type ID. More...
 
- Static Public Member Functions inherited from ns3::Object
static TypeId GetTypeId (void)
 Register this type. More...
 
- Static Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
static void Cleanup (void)
 Noop. More...
 
- Static Public Member Functions inherited from ns3::ObjectBase
static TypeId GetTypeId (void)
 Get the type ID. More...
 

Private Member Functions

virtual bool DoCorrupt (Ptr< Packet > p)
 Corrupt a packet according to the specified model. More...
 
virtual bool DoCorruptBit (Ptr< Packet > p)
 Corrupt a packet (bit unit). More...
 
virtual bool DoCorruptByte (Ptr< Packet > p)
 Corrupt a packet (Byte unit). More...
 
virtual bool DoCorruptPkt (Ptr< Packet > p)
 Corrupt a packet (packet unit). More...
 
virtual void DoReset (void)
 Re-initialize any state. More...
 

Private Attributes

Ptr< RandomVariableStreamm_ranvar
 rng stream More...
 
double m_rate
 Error rate. More...
 
enum ErrorUnit m_unit
 Error rate unit. More...
 

Additional Inherited Members

- Protected Member Functions inherited from ns3::Object
 Object (const Object &o)
 
virtual void DoDispose (void)
 This method is called by Object::Dispose or by the object's destructor, whichever comes first. More...
 
virtual void DoInitialize (void)
 This method is called only once by Object::Initialize. More...
 
virtual void NotifyNewAggregate (void)
 This method is invoked whenever two sets of objects are aggregated together. More...
 
- Protected Member Functions inherited from ns3::ObjectBase
void ConstructSelf (const AttributeConstructionList &attributes)
 
virtual void NotifyConstructionCompleted (void)
 This method is invoked once all member attributes have been initialized. More...
 

Detailed Description

Determine which packets are errored corresponding to an underlying distribution, rate, and unit.

This object is used to flag packets as being lost/errored or not. The two parameters that govern the behavior are the rate (or equivalently, the mean duration/spacing between errors), and the unit (which may be per-bit, per-byte, and per-packet). Users can optionally provide a RandomVariableStream object; the default is to use a Uniform(0,1) distribution.

Reset() on this model will do nothing

IsCorrupt() will not modify the packet data buffer

Config Paths

ns3::RateErrorModel is accessible through the following paths with Config::Set and Config::Connect:

  • /NodeList/[i]/DeviceList/[i]/$ns3::CsmaNetDevice/ReceiveErrorModel/$ns3::RateErrorModel
  • /NodeList/[i]/DeviceList/[i]/$ns3::PointToPointNetDevice/ReceiveErrorModel/$ns3::RateErrorModel
  • /NodeList/[i]/DeviceList/[i]/$ns3::SimpleNetDevice/ReceiveErrorModel/$ns3::RateErrorModel

Attributes

Attributes defined in parent class ns3::ErrorModel

  • IsEnabled: Whether this ErrorModel is enabled or not.
    • Set with class: BooleanValue
    • Underlying type: bool
    • Initial value: true
    • Flags: construct write read

No TraceSources are defined for this type.

Definition at line 182 of file error-model.h.

Member Enumeration Documentation

Error unit.

The error model can be packet, Byte or bit based.

Enumerator
ERROR_UNIT_BIT 
ERROR_UNIT_BYTE 
ERROR_UNIT_PACKET 

Definition at line 197 of file error-model.h.

Constructor & Destructor Documentation

ns3::RateErrorModel::RateErrorModel ( )

Definition at line 174 of file error-model.cc.

References NS_LOG_FUNCTION.

ns3::RateErrorModel::~RateErrorModel ( )
virtual

Definition at line 179 of file error-model.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

int64_t ns3::RateErrorModel::AssignStreams ( int64_t  stream)

Assign a fixed random variable stream number to the random variables used by this model.

Return the number of streams (possibly zero) that have been assigned.

Parameters
streamfirst stream index to use
Returns
the number of stream indices assigned by this model

Definition at line 220 of file error-model.cc.

References m_ranvar, NS_LOG_FUNCTION, and ns3::RandomVariableStream::SetStream().

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bool ns3::RateErrorModel::DoCorrupt ( Ptr< Packet p)
privatevirtual

Corrupt a packet according to the specified model.

Parameters
pthe packet to corrupt
Returns
true if the packet is corrupted

Implements ns3::ErrorModel.

Definition at line 228 of file error-model.cc.

References DoCorruptBit(), DoCorruptByte(), DoCorruptPkt(), ERROR_UNIT_BIT, ERROR_UNIT_BYTE, ERROR_UNIT_PACKET, ns3::ErrorModel::IsEnabled(), m_unit, NS_ASSERT_MSG, and NS_LOG_FUNCTION.

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bool ns3::RateErrorModel::DoCorruptBit ( Ptr< Packet p)
privatevirtual

Corrupt a packet (bit unit).

Parameters
pthe packet to corrupt
Returns
true if the packet is corrupted

Definition at line 267 of file error-model.cc.

References ns3::Packet::GetSize(), ns3::RandomVariableStream::GetValue(), m_ranvar, m_rate, and NS_LOG_FUNCTION.

Referenced by DoCorrupt().

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bool ns3::RateErrorModel::DoCorruptByte ( Ptr< Packet p)
privatevirtual

Corrupt a packet (Byte unit).

Parameters
pthe packet to corrupt
Returns
true if the packet is corrupted

Definition at line 258 of file error-model.cc.

References ns3::Packet::GetSize(), ns3::RandomVariableStream::GetValue(), m_ranvar, m_rate, and NS_LOG_FUNCTION.

Referenced by DoCorrupt().

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bool ns3::RateErrorModel::DoCorruptPkt ( Ptr< Packet p)
privatevirtual

Corrupt a packet (packet unit).

Parameters
pthe packet to corrupt
Returns
true if the packet is corrupted

Definition at line 251 of file error-model.cc.

References ns3::RandomVariableStream::GetValue(), m_ranvar, m_rate, and NS_LOG_FUNCTION.

Referenced by DoCorrupt().

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void ns3::RateErrorModel::DoReset ( void  )
privatevirtual

Re-initialize any state.

Implements ns3::ErrorModel.

Definition at line 276 of file error-model.cc.

References NS_LOG_FUNCTION.

double ns3::RateErrorModel::GetRate ( void  ) const
Returns
the error rate being applied by the model

Definition at line 199 of file error-model.cc.

References m_rate, and NS_LOG_FUNCTION.

TypeId ns3::RateErrorModel::GetTypeId ( void  )
static

Get the type ID.

Returns
the object TypeId

Definition at line 150 of file error-model.cc.

References ERROR_UNIT_BIT, ERROR_UNIT_BYTE, ERROR_UNIT_PACKET, m_ranvar, m_rate, m_unit, ns3::MakeEnumAccessor(), ns3::MakeEnumChecker(), and ns3::TypeId::SetParent().

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RateErrorModel::ErrorUnit ns3::RateErrorModel::GetUnit ( void  ) const
Returns
the ErrorUnit being used by the underlying model

Definition at line 185 of file error-model.cc.

References m_unit, and NS_LOG_FUNCTION.

void ns3::RateErrorModel::SetRandomVariable ( Ptr< RandomVariableStream ranvar)
Parameters
ranvarA random variable distribution to generate random variates

Definition at line 213 of file error-model.cc.

References m_ranvar, and NS_LOG_FUNCTION.

Referenced by ErrorModelSimple::DoRun(), and main().

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void ns3::RateErrorModel::SetRate ( double  rate)
Parameters
ratethe error rate to be used by the model

Definition at line 206 of file error-model.cc.

References m_rate, and NS_LOG_FUNCTION.

Referenced by main().

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void ns3::RateErrorModel::SetUnit ( enum ErrorUnit  error_unit)
Parameters
error_unitthe ErrorUnit to be used by the underlying model

Definition at line 192 of file error-model.cc.

References m_unit, and NS_LOG_FUNCTION.

Referenced by main().

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Member Data Documentation

Ptr<RandomVariableStream> ns3::RateErrorModel::m_ranvar
private

rng stream

Definition at line 262 of file error-model.h.

Referenced by AssignStreams(), DoCorruptBit(), DoCorruptByte(), DoCorruptPkt(), GetTypeId(), and SetRandomVariable().

double ns3::RateErrorModel::m_rate
private

Error rate.

Definition at line 260 of file error-model.h.

Referenced by DoCorruptBit(), DoCorruptByte(), DoCorruptPkt(), GetRate(), GetTypeId(), and SetRate().

enum ErrorUnit ns3::RateErrorModel::m_unit
private

Error rate unit.

Definition at line 259 of file error-model.h.

Referenced by DoCorrupt(), GetTypeId(), GetUnit(), and SetUnit().


The documentation for this class was generated from the following files: