This application implements the SGW/PGW functionality. More...

#include <epc-sgw-pgw-application.h>

Inheritance diagram for ns3::EpcSgwPgwApplication:

Collaboration diagram for ns3::EpcSgwPgwApplication:

Classes
struct	EnbInfo

class	UeInfo
	store info for each UE connected to this SGW More...

Public Member Functions
	EpcSgwPgwApplication (const Ptr< VirtualNetDevice > tunDevice, const Ptr< Socket > s1uSocket)
	Constructor that binds the tap device to the callback methods. More...

virtual	~EpcSgwPgwApplication (void)
	Destructor. More...

void	AddEnb (uint16_t cellId, Ipv4Address enbAddr, Ipv4Address sgwAddr)
	Let the SGW be aware of a new eNB. More...

void	AddUe (uint64_t imsi)
	Let the SGW be aware of a new UE. More...

virtual void	DoDispose ()
	This method is called by Object::Dispose or by the object's destructor, whichever comes first. More...

EpcS11SapSgw *	GetS11SapSgw ()

void	RecvFromS1uSocket (Ptr< Socket > socket)
	Method to be assigned to the recv callback of the S1-U socket. More...

bool	RecvFromTunDevice (Ptr< Packet > packet, const Address &source, const Address &dest, uint16_t protocolNumber)
	Method to be assigned to the callback of the Gi TUN VirtualNetDevice. More...

void	SendToS1uSocket (Ptr< Packet > packet, Ipv4Address enbS1uAddress, uint32_t teid)
	Send a packet to the SGW via the S1-U interface. More...

void	SendToTunDevice (Ptr< Packet > packet, uint32_t teid)
	Send a packet to the internet via the Gi interface of the SGW/PGW. More...

void	SetS11SapMme (EpcS11SapMme *s)
	Set the MME side of the S11 SAP. More...

void	SetUeAddress (uint64_t imsi, Ipv4Address ueAddr)
	set the address of a previously added UE More...

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

virtual	~Application ()

Ptr< Node >	GetNode () const

void	SetNode (Ptr< Node > node)

void	SetStartTime (Time start)
	Specify application start time. More...

void	SetStopTime (Time stop)
	Specify application stop time. 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...

SimpleRefCount &	operator= (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)

Static Public Member Functions inherited from ns3::Application
static TypeId	GetTypeId (void)

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
void	DoCreateSessionRequest (EpcS11SapSgw::CreateSessionRequestMessage msg)

void	DoModifyBearerRequest (EpcS11SapSgw::ModifyBearerRequestMessage msg)

Private Attributes
std::map< uint16_t, EnbInfo >	m_enbInfoByCellId

uint16_t	m_gtpuUdpPort
	UDP port to be used for GTP. More...

EpcS11SapMme *	m_s11SapMme
	MME side of the S11 SAP. More...

EpcS11SapSgw *	m_s11SapSgw
	SGW side of the S11 SAP. More...

Ptr< Socket >	m_s1uSocket
	UDP socket to send and receive GTP-U packets to and from the S1-U interface. More...

uint32_t	m_teidCount

Ptr< VirtualNetDevice >	m_tunDevice
	TUN VirtualNetDevice used for tunneling/detunneling IP packets from/to the internet over GTP-U/UDP/IP on the S1 interface. More...

std::map< Ipv4Address, Ptr < UeInfo > >	m_ueInfoByAddrMap
	Map telling for each UE address the corresponding UE info. More...

std::map< uint64_t, Ptr< UeInfo > >	m_ueInfoByImsiMap
	Map telling for each IMSI the corresponding UE info. More...

Friends
class	MemberEpcS11SapSgw< EpcSgwPgwApplication >

Additional Inherited Members
Protected Member Functions inherited from ns3::Application
virtual void	DoInitialize (void)
	This method is called only once by Object::Initialize. More...

Protected Member Functions inherited from ns3::Object
	Object (const Object &o)

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...

Protected Attributes inherited from ns3::Application
Ptr< Node >	m_node

EventId	m_startEvent
	The simulation time that the appliacation will end. More...

Time	m_startTime
	The node that this application is installed on. More...

EventId	m_stopEvent
	The event that will fire at m_startTime to start the application. More...

Time	m_stopTime
	The simulation time that the appliacation will start. More...

Detailed Description

This application implements the SGW/PGW functionality.

Definition at line 48 of file epc-sgw-pgw-application.h.

Constructor & Destructor Documentation

ns3::EpcSgwPgwApplication::EpcSgwPgwApplication	(	const Ptr< VirtualNetDevice >	tunDevice,
		const Ptr< Socket >	s1uSocket
	)

Constructor that binds the tap device to the callback methods.

Parameters

tunDevice	TUN VirtualNetDevice used to tunnel IP packets from the Gi interface of the PGW/SGW over the internet over GTP-U/UDP/IP on the S1-U interface
s1uSocket	socket used to send GTP-U packets to the eNBs

Definition at line 113 of file epc-sgw-pgw-application.cc.

References m_s11SapSgw, m_s1uSocket, ns3::MakeCallback(), NS_LOG_FUNCTION, RecvFromS1uSocket(), and ns3::Socket::SetRecvCallback().

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ns3::EpcSgwPgwApplication::~EpcSgwPgwApplication ( void )

virtual

Destructor.

Definition at line 126 of file epc-sgw-pgw-application.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

void ns3::EpcSgwPgwApplication::AddEnb	(	uint16_t	cellId,
		Ipv4Address	enbAddr,
		Ipv4Address	sgwAddr
	)

Let the SGW be aware of a new eNB.

Parameters

cellId	the cell identifier
enbAddr	the address of the eNB
sgwAddr	the address of the SGW

Definition at line 225 of file epc-sgw-pgw-application.cc.

References ns3::EpcSgwPgwApplication::EnbInfo::enbAddr, m_enbInfoByCellId, NS_LOG_FUNCTION, and ns3::EpcSgwPgwApplication::EnbInfo::sgwAddr.

void ns3::EpcSgwPgwApplication::AddUe ( uint64_t imsi )

Let the SGW be aware of a new UE.

Parameters

imsi	the unique identifier of the UE

Definition at line 235 of file epc-sgw-pgw-application.cc.

References m_ueInfoByImsiMap, and NS_LOG_FUNCTION.

void ns3::EpcSgwPgwApplication::DoCreateSessionRequest ( EpcS11SapSgw::CreateSessionRequestMessage msg )

private

void ns3::EpcSgwPgwApplication::DoDispose ( void )

virtual

This method is called by Object::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::Application.

Definition at line 103 of file epc-sgw-pgw-application.cc.

References m_s11SapSgw, m_s1uSocket, ns3::MakeNullCallback(), NS_LOG_FUNCTION, and ns3::Socket::SetRecvCallback().

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void ns3::EpcSgwPgwApplication::DoModifyBearerRequest ( EpcS11SapSgw::ModifyBearerRequestMessage msg )

private

Definition at line 291 of file epc-sgw-pgw-application.cc.

References ns3::EpcS11SapMme::ModifyBearerResponseMessage::cause, m_enbInfoByCellId, m_s11SapMme, m_ueInfoByImsiMap, ns3::EpcS11SapMme::ModifyBearerResponse(), NS_ASSERT_MSG, NS_LOG_FUNCTION, ns3::EpcS11SapMme::ModifyBearerResponseMessage::REQUEST_ACCEPTED, ns3::EpcS11Sap::GtpcMessage::teid, and ns3::EpcS11SapSgw::ModifyBearerRequestMessage::uli.

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EpcS11SapSgw * ns3::EpcSgwPgwApplication::GetS11SapSgw ( )

Returns: the SGW side of the S11 SAP

Definition at line 219 of file epc-sgw-pgw-application.cc.

References m_s11SapSgw.

TypeId ns3::EpcSgwPgwApplication::GetTypeId ( void )

static

Definition at line 95 of file epc-sgw-pgw-application.cc.

References ns3::TypeId::SetParent().

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void ns3::EpcSgwPgwApplication::RecvFromS1uSocket ( Ptr< Socket > socket )

Method to be assigned to the recv callback of the S1-U socket.

It is called when the SGW/PGW receives a data packet from the eNB that is to be forwarded to the internet.

Parameters

socket pointer to the S1-U socket

Internal:: Workaround for Bug 231

Definition at line 171 of file epc-sgw-pgw-application.cc.

References ns3::GtpuHeader::GetTeid(), m_s1uSocket, NS_ASSERT, NS_LOG_FUNCTION, ns3::Socket::Recv(), ns3::Packet::RemoveHeader(), ns3::Packet::RemovePacketTag(), and SendToTunDevice().

Referenced by EpcSgwPgwApplication().

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bool ns3::EpcSgwPgwApplication::RecvFromTunDevice	(	Ptr< Packet >	packet,
		const Address &	source,
		const Address &	dest,
		uint16_t	protocolNumber
	)

Method to be assigned to the callback of the Gi TUN VirtualNetDevice.

It is called when the SGW/PGW receives a data packet from the internet (including IP headers) that is to be sent to the UE via its associated eNB, tunneling IP over GTP-U/UDP/IP.

Parameters