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ns3::ThreeGppV2vHighwayChannelConditionModel Class Reference
Buildings

Computes the channel condition for the V2V Highway scenario. More...

#include "three-gpp-v2v-channel-condition-model.h"

+ Inheritance diagram for ns3::ThreeGppV2vHighwayChannelConditionModel:
+ Collaboration diagram for ns3::ThreeGppV2vHighwayChannelConditionModel:

Public Member Functions

 ThreeGppV2vHighwayChannelConditionModel ()
 Constructor for the ThreeGppV2vHighwayChannelConditionModel class.
 
 ~ThreeGppV2vHighwayChannelConditionModel () override
 Destructor for the ThreeGppV2vHighwayChannelConditionModel class.
 
- Public Member Functions inherited from ns3::ThreeGppChannelConditionModel
 ThreeGppChannelConditionModel ()
 Constructor for the ThreeGppRmaChannelConditionModel class.
 
 ~ThreeGppChannelConditionModel () override
 Destructor for the ThreeGppRmaChannelConditionModel class.
 
int64_t AssignStreams (int64_t stream) override
 If this model uses objects of type RandomVariableStream, set the stream numbers to the integers starting with the offset 'stream'.
 
Ptr< ChannelCondition > GetChannelCondition (Ptr< const MobilityModel > a, Ptr< const MobilityModel > b) const override
 Retrieve the condition of the channel between a and b.
 
- Public Member Functions inherited from ns3::ChannelConditionModel
 ChannelConditionModel ()
 Constructor for the ChannelConditionModel class.
 
 ChannelConditionModel (const ChannelConditionModel &)=delete
 
 ~ChannelConditionModel () override
 Destructor for the ChannelConditionModel class.
 
virtual int64_t AssignStreams (int64_t stream)=0
 If this model uses objects of type RandomVariableStream, set the stream numbers to the integers starting with the offset 'stream'.
 
virtual Ptr< ChannelCondition > GetChannelCondition (Ptr< const MobilityModel > a, Ptr< const MobilityModel > b) const =0
 Computes the condition of the channel between a and b.
 
ChannelConditionModel & operator= (const ChannelConditionModel &)=delete
 
- Public Member Functions inherited from ns3::Object
 Object ()
 Constructor.
 
 ~Object () override
 Destructor.
 
void AggregateObject (Ptr< Object > other)
 Aggregate two Objects together.
 
void Dispose ()
 Dispose of this Object.
 
AggregateIterator GetAggregateIterator () const
 Get an iterator to the Objects aggregated to this one.
 
TypeId GetInstanceTypeId () const override
 Get the most derived TypeId for this Object.
 
template<typename T >
Ptr< T > GetObject () const
 Get a pointer to the requested aggregated Object.
 
template<>
Ptr< Object > GetObject () const
 Specialization of () for objects of type ns3::Object.
 
template<typename T >
Ptr< T > GetObject (TypeId tid) const
 Get a pointer to the requested aggregated Object by TypeId.
 
template<>
Ptr< Object > GetObject (TypeId tid) const
 Specialization of (TypeId tid) for objects of type ns3::Object.
 
void Initialize ()
 Invoke DoInitialize on all Objects aggregated to this one.
 
bool IsInitialized () const
 Check if the object has been initialized.
 
void UnidirectionalAggregateObject (Ptr< Object > other)
 Aggregate an Object to another Object.
 
- Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
 SimpleRefCount ()
 Default constructor.
 
 SimpleRefCount (const SimpleRefCount &o)
 Copy constructor.
 
uint32_t GetReferenceCount () const
 Get the reference count of the object.
 
SimpleRefCount & operator= (const SimpleRefCount &o)
 Assignment operator.
 
void Ref () const
 Increment the reference count.
 
void Unref () const
 Decrement the reference count.
 
- Public Member Functions inherited from ns3::ObjectBase
virtual ~ObjectBase ()
 Virtual destructor.
 
void GetAttribute (std::string name, AttributeValue &value) const
 Get the value of an attribute, raising fatal errors if unsuccessful.
 
bool GetAttributeFailSafe (std::string name, AttributeValue &value) const
 Get the value of an attribute without raising errors.
 
virtual TypeId GetInstanceTypeId () const =0
 Get the most derived TypeId for this Object.
 
void SetAttribute (std::string name, const AttributeValue &value)
 Set a single attribute, raising fatal errors if unsuccessful.
 
bool SetAttributeFailSafe (std::string name, const AttributeValue &value)
 Set a single attribute without raising errors.
 
bool TraceConnect (std::string name, std::string context, const CallbackBase &cb)
 Connect a TraceSource to a Callback with a context.
 
bool TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
 Connect a TraceSource to a Callback without a context.
 
bool TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
 Disconnect from a TraceSource a Callback previously connected with a context.
 
bool TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
 Disconnect from a TraceSource a Callback previously connected without a context.
 

Static Public Member Functions

static TypeId GetTypeId ()
 Get the type ID.
 
- Static Public Member Functions inherited from ns3::ThreeGppChannelConditionModel
static TypeId GetTypeId ()
 Get the type ID.
 
- Static Public Member Functions inherited from ns3::ChannelConditionModel
static TypeId GetTypeId ()
 Get the type ID.
 
- Static Public Member Functions inherited from ns3::Object
static TypeId GetTypeId ()
 Register this type.
 
- Static Public Member Functions inherited from ns3::ObjectBase
static TypeId GetTypeId ()
 Get the type ID.
 

Private Member Functions

double ComputePlos (Ptr< const MobilityModel > a, Ptr< const MobilityModel > b) const override
 Compute the LOS probability as specified in Table Table 6.2-1 of 3GPP TR 37.885 for the V2V Highway scenario.
 
double ComputePnlos (Ptr< const MobilityModel > a, Ptr< const MobilityModel > b) const override
 Compute the NLOS probability.
 
Ptr< ChannelCondition > GetChCondAndFixCallback (Ptr< const MobilityModel > a, Ptr< const MobilityModel > b)
 Get the channel condition and redirect the callback ComputeChCond to GetChCondWithBuildings or to GetChCondWithNoBuildings depending on if there are buildings in the scenario or not.
 
Ptr< ChannelCondition > GetChCondWithBuildings (Ptr< const MobilityModel > a, Ptr< const MobilityModel > b) const
 Get the channel condition between a and b using BuildingsChannelConditionModel.
 
Ptr< ChannelCondition > GetChCondWithNoBuildings (Ptr< const MobilityModel > a, Ptr< const MobilityModel > b) const
 Get the channel condition between a and b.
 

Private Attributes

std::function< Ptr< ChannelCondition >(Ptr< const MobilityModel >, Ptr< const MobilityModel >)> ComputeChCond
 The callback which is hooked to a method to compute channel condition.
 
Ptr< BuildingsChannelConditionModel > m_buildingsCcm
 used to determine the obstructions due to buildings
 

Additional Inherited Members

- Protected Types inherited from ns3::ThreeGppChannelConditionModel
enum  VehicleDensity { LOW , MEDIUM , HIGH , INVALID }
 Determine the density of vehicles in a V2V scenario. More...
 
- Protected Member Functions inherited from ns3::ThreeGppChannelConditionModel
void DoDispose () override
 Destructor implementation.
 
- Protected Member Functions inherited from ns3::Object
 Object (const Object &o)
 Copy an Object.
 
virtual void DoDispose ()
 Destructor implementation.
 
virtual void DoInitialize ()
 Initialize() implementation.
 
virtual void NotifyNewAggregate ()
 Notify all Objects aggregated to this one of a new Object being aggregated.
 
- Protected Member Functions inherited from ns3::ObjectBase
void ConstructSelf (const AttributeConstructionList &attributes)
 Complete construction of ObjectBase; invoked by derived classes.
 
virtual void NotifyConstructionCompleted ()
 Notifier called once the ObjectBase is fully constructed.
 
- Static Protected Member Functions inherited from ns3::ThreeGppChannelConditionModel
static double Calculate2dDistance (const Vector &a, const Vector &b)
 Computes the 2D distance between two 3D vectors.
 
- Protected Attributes inherited from ns3::ThreeGppChannelConditionModel
Ptr< UniformRandomVariable > m_uniformVar
 uniform random variable
 
- Related Functions inherited from ns3::ObjectBase
static TypeId GetObjectIid ()
 Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly.
 

Detailed Description

Computes the channel condition for the V2V Highway scenario.

Computes the channel condition following the specifications for the V2V Highway scenario reported in Table 6.2-1 of 3GPP TR 37.885.

3GPP TR 37.885 defines 3 different channel states for vehicular environments: LOS, NLOS and NLOSv, the latter representing the case in which the LOS path is blocked by other vehicles in the scenario. The document defines a probabilistic model to determine if the channel state is LOS or NLOSv, while the NLOS state is determined in a deterministic way based on the buildings deployed in the scenario. For this reason, this class makes use of an instance of BuildingsChannelConditionModel to determine if the LOS is obstructed by buildings or not.

Config Paths

ns3::ThreeGppV2vHighwayChannelConditionModel is accessible through the following paths with Config::Set and Config::Connect:

  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Channel/$ns3::SpectrumChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Channel/$ns3::SpectrumChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Channel/$ns3::YansWifiChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Channel/$ns3::YansWifiChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Phy/Channel/$ns3::SpectrumChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Phy/Channel/$ns3::SpectrumChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Phy/Channel/$ns3::YansWifiChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Phy/Channel/$ns3::YansWifiChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Phys/[i]/Channel/$ns3::SpectrumChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Phys/[i]/Channel/$ns3::SpectrumChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Phys/[i]/Channel/$ns3::YansWifiChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::WifiNetDevice/Phys/[i]/Channel/$ns3::YansWifiChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::LrWpanNetDevice/Channel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/NodeList/[i]/DeviceList/[i]/$ns3::LrWpanNetDevice/Channel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/ChannelList/[i]/$ns3::SpectrumChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/ChannelList/[i]/$ns3::SpectrumChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/ChannelList/[i]/$ns3::YansWifiChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"
  • "/ChannelList/[i]/$ns3::YansWifiChannel/PropagationLossModel/$ns3::ThreeGppPropagationLossModel/ChannelConditionModel/$ns3::ThreeGppV2vHighwayChannelConditionModel"

No Attributes are defined for this type.

Attributes defined in parent class ns3::ThreeGppChannelConditionModel

  • LinkO2iConditionToAntennaHeight: Specifies whether the O2I condition will be determined based on the UE height, i.e. if the UE height is 1.5 then it is O2O, otherwise it is O2I.
    • Set with class: ns3::BooleanValue
    • Underlying type: bool
    • Initial value: false
    • Flags: constructwriteread
  • O2iLowLossThreshold: Specifies what will be the ratio of O2I low - high penetration losses. Default value is 1.0 meaning thatall losses will be low
    • Set with class: ns3::DoubleValue
    • Underlying type: double 0:1
    • Initial value: 1
    • Flags: constructwriteread
  • O2iThreshold: Specifies what will be the ratio of O2I channel conditions. Default value is 0 that corresponds to 0 O2I losses.
    • Set with class: ns3::DoubleValue
    • Underlying type: double 0:1
    • Initial value: 0
    • Flags: constructwriteread
  • UpdatePeriod: Specifies the time period after which the channel condition is recomputed. If set to 0, the channel condition is never updated.
    • Set with class: ns3::TimeValue
    • Underlying type: Time +9.22337e+18ns:+9.22337e+18ns
    • Initial value: +0ns
    • Flags: constructwriteread

No TraceSources are defined for this type.
Size of this type is 208 bytes (on a 64-bit architecture).

Definition at line 115 of file three-gpp-v2v-channel-condition-model.h.

Constructor & Destructor Documentation

◆ ThreeGppV2vHighwayChannelConditionModel()

ns3::ThreeGppV2vHighwayChannelConditionModel::ThreeGppV2vHighwayChannelConditionModel ( )

Constructor for the ThreeGppV2vHighwayChannelConditionModel class.

Definition at line 110 of file three-gpp-v2v-channel-condition-model.cc.

References ComputeChCond, GetChCondAndFixCallback(), and m_buildingsCcm.

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◆ ~ThreeGppV2vHighwayChannelConditionModel()

ns3::ThreeGppV2vHighwayChannelConditionModel::~ThreeGppV2vHighwayChannelConditionModel ( )
override

Destructor for the ThreeGppV2vHighwayChannelConditionModel class.

Definition at line 120 of file three-gpp-v2v-channel-condition-model.cc.

Member Function Documentation

◆ ComputePlos()

double ns3::ThreeGppV2vHighwayChannelConditionModel::ComputePlos ( Ptr< const MobilityModel >  a,
Ptr< const MobilityModel >  b 
) const
overrideprivatevirtual

Compute the LOS probability as specified in Table Table 6.2-1 of 3GPP TR 37.885 for the V2V Highway scenario.

Parameters
atx mobility model
brx mobility model
Returns
the LOS probability

Implements ns3::ThreeGppChannelConditionModel.

Definition at line 125 of file three-gpp-v2v-channel-condition-model.cc.

References ns3::ThreeGppChannelConditionModel::Calculate2dDistance(), ComputeChCond, NS_ASSERT_MSG, and NS_LOG_FUNCTION.

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◆ ComputePnlos()

double ns3::ThreeGppV2vHighwayChannelConditionModel::ComputePnlos ( Ptr< const MobilityModel >  a,
Ptr< const MobilityModel >  b 
) const
overrideprivatevirtual

Compute the NLOS probability.

It determines the presence of obstructions between the tx and the rx based on the buildings deployed in the scenario. It returns 1 if the LOS path is obstructed, 0 otherwise.

Parameters
atx mobility model
brx mobility model
Returns
the NLOS probability

Reimplemented from ns3::ThreeGppChannelConditionModel.

Definition at line 155 of file three-gpp-v2v-channel-condition-model.cc.

References ComputeChCond, NS_ASSERT_MSG, and NS_LOG_FUNCTION.

◆ GetChCondAndFixCallback()

Ptr< ChannelCondition > ns3::ThreeGppV2vHighwayChannelConditionModel::GetChCondAndFixCallback ( Ptr< const MobilityModel >  a,
Ptr< const MobilityModel >  b 
)
private

Get the channel condition and redirect the callback ComputeChCond to GetChCondWithBuildings or to GetChCondWithNoBuildings depending on if there are buildings in the scenario or not.

Parameters
atx mobility model
brx mobility model
Returns
the the condition of the channel between a and b

Definition at line 174 of file three-gpp-v2v-channel-condition-model.cc.

References ns3::BuildingList::Begin(), ComputeChCond, ns3::BuildingList::End(), GetChCondWithBuildings(), and GetChCondWithNoBuildings().

Referenced by ThreeGppV2vHighwayChannelConditionModel().

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◆ GetChCondWithBuildings()

Ptr< ChannelCondition > ns3::ThreeGppV2vHighwayChannelConditionModel::GetChCondWithBuildings ( Ptr< const MobilityModel >  a,
Ptr< const MobilityModel >  b 
) const
private

Get the channel condition between a and b using BuildingsChannelConditionModel.

This method will be called for the scenarios with buildings

Parameters
atx mobility model
brx mobility model
Returns
the condition of the channel between a and b

Definition at line 199 of file three-gpp-v2v-channel-condition-model.cc.

References m_buildingsCcm.

Referenced by GetChCondAndFixCallback().

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◆ GetChCondWithNoBuildings()

Ptr< ChannelCondition > ns3::ThreeGppV2vHighwayChannelConditionModel::GetChCondWithNoBuildings ( Ptr< const MobilityModel >  a,
Ptr< const MobilityModel >  b 
) const
private

Get the channel condition between a and b.

This method will be called for the scenarios without buildings

Parameters
atx mobility model
brx mobility model
Returns
the condition of the channel between a and b

Definition at line 207 of file three-gpp-v2v-channel-condition-model.cc.

References ns3::ChannelCondition::LOS, and ns3::ChannelCondition::O2O.

Referenced by GetChCondAndFixCallback().

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◆ GetTypeId()

TypeId ns3::ThreeGppV2vHighwayChannelConditionModel::GetTypeId ( )
static

Get the type ID.

Get the type ID.

Returns
the object TypeId

Definition at line 101 of file three-gpp-v2v-channel-condition-model.cc.

References ns3::TypeId::SetParent().

Referenced by ThreeGppV2vBuildingsChCondModelTestCase::DoRun(), and ThreeGppV2vHighwayLosNlosvChCondModelTestCase::DoRun().

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Member Data Documentation

◆ ComputeChCond

std::function<Ptr<ChannelCondition>(Ptr<const MobilityModel>, Ptr<const MobilityModel>)> ns3::ThreeGppV2vHighwayChannelConditionModel::ComputeChCond
private

The callback which is hooked to a method to compute channel condition.

This callback is implemented to make this model robust against the presence and absence of buildings in a highway scenario. If there are buildings in a scenario, this model will use BuildingsChannelConditionModel, which requires MobilityBuildingInfo aggregated to the nodes to compute LOS and NLOS. Otherwise, the callback is hooked to a local method GetChCondWithNoBuildings , which construct the ChannelCondtion object and set the condition to outdoor to outdoor with LOS.

Definition at line 171 of file three-gpp-v2v-channel-condition-model.h.

Referenced by ThreeGppV2vHighwayChannelConditionModel(), ComputePlos(), ComputePnlos(), and GetChCondAndFixCallback().

◆ m_buildingsCcm

Ptr<BuildingsChannelConditionModel> ns3::ThreeGppV2vHighwayChannelConditionModel::m_buildingsCcm
private

used to determine the obstructions due to buildings

Definition at line 212 of file three-gpp-v2v-channel-condition-model.h.

Referenced by ThreeGppV2vHighwayChannelConditionModel(), and GetChCondWithBuildings().

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