The class that delivers packets among PHY layers. More...

#include "lora-channel.h"

Inheritance diagram for ns3::lorawan::LoraChannel:

Collaboration diagram for ns3::lorawan::LoraChannel:

Public Member Functions
	LoraChannel ()
	Default constructor.

	LoraChannel (Ptr< PropagationLossModel > loss, Ptr< PropagationDelayModel > delay)
	Construct a LoraChannel with a loss and delay model.

	~LoraChannel () override
	Destructor.

void	Add (Ptr< LoraPhy > phy)
	Connect a LoraPhy object to the LoraChannel.

Ptr< NetDevice >	GetDevice (std::size_t i) const override

std::size_t	GetNDevices () const override

double	GetRxPower (double txPowerDbm, Ptr< MobilityModel > senderMobility, Ptr< MobilityModel > receiverMobility) const
	Compute the received power when transmitting from a point to another one.

void	Remove (Ptr< LoraPhy > phy)
	Remove a physical layer from the LoraChannel.

void	Send (Ptr< LoraPhy > sender, Ptr< Packet > packet, double txPowerDbm, LoraTxParameters txParams, Time duration, double frequencyMHz) const
	Send a packet in the channel.

Public Member Functions inherited from ns3::Channel
	Channel ()

	~Channel () override

uint32_t	GetId () const

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, bool permissive=false) 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.

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 ()
	Register this type.

Static Public Member Functions inherited from ns3::Channel
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
void	Receive (uint32_t i, Ptr< Packet > packet, LoraChannelParameters parameters) const
	Private method that is scheduled by LoraChannel's Send method to happen after the channel delay, for each of the connected PHY layers.

Private Attributes
Ptr< PropagationDelayModel >	m_delay
	Pointer to the delay model.

Ptr< PropagationLossModel >	m_loss
	Pointer to the loss model.

TracedCallback< Ptr< const Packet > >	m_packetSent
	Callback for when a packet is being sent on the channel.

std::vector< Ptr< LoraPhy > >	m_phyList
	The vector containing the PHYs that are currently connected to the channel.

Additional Inherited Members
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.

Related Symbols inherited from ns3::ObjectBase
static TypeId	GetObjectIid ()
	Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly.

Detailed Description

The class that delivers packets among PHY layers.

This class is tasked with taking packets that PHY layers want to send and, based on some factors like the transmission power and the node positions, computing the power at every receiver using a PropagationLossModel and notifying them of the reception event after a delay based on some PropagationDelayModel.

Definition at line 70 of file lora-channel.h.

Constructor & Destructor Documentation

◆ LoraChannel() [1/2]

ns3::lorawan::LoraChannel::LoraChannel ( )

Default constructor.

Definition at line 56 of file lora-channel.cc.

◆ ~LoraChannel()

ns3::lorawan::LoraChannel::~LoraChannel ( )

override

Destructor.

Definition at line 60 of file lora-channel.cc.

References m_phyList.

◆ LoraChannel() [2/2]

ns3::lorawan::LoraChannel::LoraChannel	(	Ptr< PropagationLossModel >	loss,
		Ptr< PropagationDelayModel >	delay )

Construct a LoraChannel with a loss and delay model.

Parameters

loss	The loss model to associate to this channel.
delay	The delay model to associate to this channel.

Definition at line 65 of file lora-channel.cc.

Member Function Documentation

◆ Add()

void ns3::lorawan::LoraChannel::Add ( Ptr< LoraPhy > phy )

Connect a LoraPhy object to the LoraChannel.

This method is needed so that the channel knows it has to notify this PHY of incoming transmissions.

Parameters

phy	The physical layer to add.

Definition at line 72 of file lora-channel.cc.

References m_phyList, and NS_LOG_FUNCTION.

◆ GetDevice()

Ptr< NetDevice > ns3::lorawan::LoraChannel::GetDevice ( std::size_t i ) const

overridevirtual

Parameters

i	index of NetDevice to retrieve

Returns: one of the NetDevices connected to this channel.

This method must be implemented by subclasses.

Implements ns3::Channel.

Definition at line 96 of file lora-channel.cc.

References ns3::DynamicCast(), GetDevice(), and m_phyList.

Referenced by GetDevice().

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◆ GetNDevices()

std::size_t ns3::lorawan::LoraChannel::GetNDevices ( ) const

overridevirtual

Returns: the number of NetDevices connected to this Channel.

This method must be implemented by subclasses.

Implements ns3::Channel.

Definition at line 90 of file lora-channel.cc.

References m_phyList.

◆ GetRxPower()

double ns3::lorawan::LoraChannel::GetRxPower	(	double	txPowerDbm,
		Ptr< MobilityModel >	senderMobility,
		Ptr< MobilityModel >	receiverMobility ) const

Compute the received power when transmitting from a point to another one.

This method can be used by external object to see the receive power of a transmission from one point to another using this Channel's PropagationLossModel.

Parameters

txPowerDbm	The power the transmitter is using, in dBm.
senderMobility	The mobility model of the sender.
receiverMobility	The mobility model of the receiver.

Returns: The received power in dBm.

Definition at line 194 of file lora-channel.cc.

References m_loss.

Referenced by Send().

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◆ GetTypeId()

TypeId ns3::lorawan::LoraChannel::GetTypeId ( )

static

Register this type.

Returns: The object TypeId.

Definition at line 32 of file lora-channel.cc.

References m_delay, m_loss, m_packetSent, ns3::MakePointerAccessor(), ns3::MakePointerChecker(), ns3::MakeTraceSourceAccessor(), and ns3::TypeId::SetParent().

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◆ Receive()

void ns3::lorawan::LoraChannel::Receive	(	uint32_t	i,
		Ptr< Packet >	packet,
		LoraChannelParameters	parameters ) const

private

Private method that is scheduled by LoraChannel's Send method to happen after the channel delay, for each of the connected PHY layers.

It's here that the Receive method of the PHY is called to initiate packet reception at the PHY.

Parameters

i	The index of the phy to start reception on.
packet	The packet the phy will receive.
parameters	The parameters that characterize this transmission.

Definition at line 181 of file lora-channel.cc.

References ns3::lorawan::LoraChannelParameters::duration, ns3::lorawan::LoraChannelParameters::frequencyMHz, m_phyList, NS_LOG_FUNCTION, ns3::lorawan::LoraChannelParameters::rxPowerDbm, and ns3::lorawan::LoraChannelParameters::sf.

Referenced by Send().

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◆ Remove()

void ns3::lorawan::LoraChannel::Remove ( Ptr< LoraPhy > phy )

Remove a physical layer from the LoraChannel.

This method removes a phy from the list of devices we have to notify. Removing unused PHY layers from the channel can improve performance, since it is not necessary to notify them about each transmission.

Parameters

phy	The physical layer to remove.

Definition at line 81 of file lora-channel.cc.

References m_phyList, and NS_LOG_FUNCTION.

◆ Send()

void ns3::lorawan::LoraChannel::Send	(	Ptr< LoraPhy >	sender,
		Ptr< Packet >	packet,
		double	txPowerDbm,
		LoraTxParameters	txParams,
		Time	duration,
		double	frequencyMHz ) const

Send a packet in the channel.

This method is typically invoked by a PHY that needs to send a packet. Every connected Phy will be notified of this packet send through a call to their StartReceive methods after a delay based on the channel's PropagationDelayModel.

Parameters

sender	The phy that is sending this packet.
packet	The PHY layer packet that is being sent over the channel.
txPowerDbm	The power of the transmission.
txParams	The set of parameters that are used by the transmitter.
duration	The on-air duration of this packet.
frequencyMHz	The frequency this transmission will happen at.

Internal:

When this method is called, the channel schedules an internal Receive call that performs the actual call to the PHY's StartReceive function.

Definition at line 102 of file lora-channel.cc.

References ns3::lorawan::LoraChannelParameters::duration, ns3::lorawan::LoraChannelParameters::frequencyMHz, GetRxPower(), m_delay, m_packetSent, m_phyList, NS_ASSERT, NS_LOG_DEBUG, NS_LOG_FUNCTION, NS_LOG_INFO, Receive(), ns3::lorawan::LoraChannelParameters::rxPowerDbm, ns3::Simulator::ScheduleWithContext(), ns3::lorawan::LoraChannelParameters::sf, and ns3::lorawan::LoraTxParameters::sf.

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Member Data Documentation

◆ m_delay

Ptr<PropagationDelayModel> ns3::lorawan::LoraChannel::m_delay

private

Pointer to the delay model.

Definition at line 189 of file lora-channel.h.

Referenced by GetTypeId(), and Send().

◆ m_loss

Ptr<PropagationLossModel> ns3::lorawan::LoraChannel::m_loss

private

Pointer to the loss model.

This loss model can be a concatenation of multiple loss models, obtained via PropagationLossModel's SetNext method.

Definition at line 184 of file lora-channel.h.

Referenced by GetRxPower(), and GetTypeId().

◆ m_packetSent

TracedCallback<Ptr<const Packet> > ns3::lorawan::LoraChannel::m_packetSent

private

Callback for when a packet is being sent on the channel.

Definition at line 194 of file lora-channel.h.

Referenced by GetTypeId(), and Send().

◆ m_phyList

std::vector<Ptr<LoraPhy> > ns3::lorawan::LoraChannel::m_phyList

private

The vector containing the PHYs that are currently connected to the channel.

Definition at line 176 of file lora-channel.h.

Referenced by ~LoraChannel(), Add(), GetDevice(), GetNDevices(), Receive(), Remove(), and Send().

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

src/lorawan/model/lora-channel.h
src/lorawan/model/lora-channel.cc

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ LoraChannel() [1/2]

◆ ~LoraChannel()

◆ LoraChannel() [2/2]

Member Function Documentation

◆ Add()

◆ GetDevice()

◆ GetNDevices()

◆ GetRxPower()

◆ GetTypeId()

◆ Receive()

◆ Remove()

◆ Send()

Member Data Documentation

◆ m_delay

◆ m_loss

◆ m_packetSent

◆ m_phyList