Implements the IEEE 802.11n PHY header (HT-SIG1/2). More...

#include "wifi-phy-header.h"

Inheritance diagram for ns3::HtSigHeader:

Collaboration diagram for ns3::HtSigHeader:

Public Member Functions
	HtSigHeader ()

virtual	~HtSigHeader ()

uint32_t	Deserialize (Buffer::Iterator start)

bool	GetAggregation (void) const
	Return the aggregation field of HT-SIG. More...

uint16_t	GetChannelWidth (void) const
	Return the channel width (in MHz). More...

uint16_t	GetHtLength (void) const
	Return the HT length field of HT-SIG (in bytes). More...

TypeId	GetInstanceTypeId (void) const
	Get the most derived TypeId for this Object. More...

uint8_t	GetMcs (void) const
	Return the MCS field of HT-SIG. More...

uint32_t	GetSerializedSize (void) const

bool	GetShortGuardInterval (void) const
	Return the short guard interval field of HT-SIG. More...

void	Print (std::ostream &os) const

void	Serialize (Buffer::Iterator start) const

void	SetAggregation (bool aggregation)
	Fill the aggregation field of HT-SIG. More...

void	SetChannelWidth (uint16_t channelWidth)
	Fill the channel width field of HT-SIG (in MHz). More...

void	SetHtLength (uint16_t length)
	Fill the HT length field of HT-SIG (in bytes). More...

void	SetMcs (uint8_t mcs)
	Fill the MCS field of HT-SIG. More...

void	SetShortGuardInterval (bool sgi)
	Fill the short guard interval field of HT-SIG. More...

Public Member Functions inherited from ns3::Header
virtual	~Header ()

virtual uint32_t	Deserialize (Buffer::Iterator start, Buffer::Iterator end)
	Deserialize the object from a buffer iterator. More...

virtual uint32_t	Deserialize (Buffer::Iterator start)=0
	Deserialize the object from a buffer iterator. More...

Public Member Functions inherited from ns3::Chunk
virtual uint32_t	Deserialize (Buffer::Iterator start, Buffer::Iterator end)
	Deserialize the object from a buffer iterator. 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...

Static Public Member Functions
static TypeId	GetTypeId (void)
	Get the type ID. More...

Static Public Member Functions inherited from ns3::Header
static TypeId	GetTypeId (void)
	Get the type ID. More...

Static Public Member Functions inherited from ns3::Chunk
static TypeId	GetTypeId (void)
	Get the type ID. More...

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId (void)
	Get the type ID. More...

Private Attributes
uint8_t	m_aggregation
	Aggregation. More...

uint8_t	m_cbw20_40
	CBW 20/40. More...

uint16_t	m_htLength
	HT length. More...

uint8_t	m_mcs
	Modulation and Coding Scheme index. More...

uint8_t	m_sgi
	Short Guard Interval. More...

Additional Inherited Members
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...

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...

Detailed Description

Implements the IEEE 802.11n PHY header (HT-SIG1/2).

Introspection did not find any typical Config paths.

See section 19.3.9 in IEEE 802.11-2016.

No Attributes are defined for this type.
No TraceSources are defined for this type.
Size of this type is 16 bytes (on a 64-bit architecture).

Definition at line 144 of file wifi-phy-header.h.

Constructor & Destructor Documentation

◆ HtSigHeader()

ns3::HtSigHeader::HtSigHeader ( )

Definition at line 337 of file wifi-phy-header.cc.

◆ ~HtSigHeader()

ns3::HtSigHeader::~HtSigHeader ( )

virtual

Definition at line 346 of file wifi-phy-header.cc.

Member Function Documentation

◆ Deserialize()

uint32_t ns3::HtSigHeader::Deserialize ( Buffer::Iterator start )

virtual

Parameters

start an iterator which points to where the header should read from.

Returns: the number of bytes read.

This method is used by Packet::RemoveHeader to re-create a header from the byte buffer of a packet. The data read is expected to match bit-for-bit the representation of this header in real networks.

Note that data is not actually removed from the buffer to which the iterator points. Both Packet::RemoveHeader() and Packet::PeekHeader() call Deserialize(), but only the RemoveHeader() has additional statements to remove the header bytes from the underlying buffer and associated metadata.

Implements ns3::Header.

Definition at line 459 of file wifi-phy-header.cc.

References ns3::Buffer::Iterator::GetDistanceFrom(), m_aggregation, m_cbw20_40, m_htLength, m_mcs, m_sgi, ns3::Buffer::Iterator::ReadU16(), ns3::Buffer::Iterator::ReadU8(), and visualizer.core::start().

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◆ GetAggregation()

bool ns3::HtSigHeader::GetAggregation ( void ) const

Return the aggregation field of HT-SIG.

Returns: the aggregation field of HT-SIG

Definition at line 427 of file wifi-phy-header.cc.

References m_aggregation.

Referenced by ns3::WifiPhy::StartReceivePreamble().

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◆ GetChannelWidth()

uint16_t ns3::HtSigHeader::GetChannelWidth ( void ) const

Return the channel width (in MHz).

Returns: the channel width (in MHz)

Definition at line 403 of file wifi-phy-header.cc.

References m_cbw20_40.

Referenced by Print(), and ns3::WifiPhy::StartReceivePreamble().

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◆ GetHtLength()

uint16_t ns3::HtSigHeader::GetHtLength ( void ) const

Return the HT length field of HT-SIG (in bytes).

Returns: the HT length field of HT-SIG (in bytes)

Definition at line 415 of file wifi-phy-header.cc.

References m_htLength.

◆ GetInstanceTypeId()

TypeId ns3::HtSigHeader::GetInstanceTypeId ( void ) const

virtual

Get the most derived TypeId for this Object.

This method is typically implemented by ns3::Object::GetInstanceTypeId but some classes which derive from ns3::ObjectBase directly have to implement it themselves.

Returns: The TypeId associated to the most-derived type of this instance.

Implements ns3::ObjectBase.

Definition at line 362 of file wifi-phy-header.cc.

References GetTypeId().

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◆ GetMcs()

uint8_t ns3::HtSigHeader::GetMcs ( void ) const

Return the MCS field of HT-SIG.

Returns: the MCS field of HT-SIG

Definition at line 391 of file wifi-phy-header.cc.

References m_mcs.

Referenced by ns3::WifiPhy::StartReceivePreamble().

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◆ GetSerializedSize()

uint32_t ns3::HtSigHeader::GetSerializedSize ( void ) const

virtual

Returns: the expected size of the header.

This method is used by Packet::AddHeader to store a header into the byte buffer of a packet. This method should return the number of bytes which are needed to store the full header data by Serialize.

Implements ns3::Header.

Definition at line 378 of file wifi-phy-header.cc.

◆ GetShortGuardInterval()

bool ns3::HtSigHeader::GetShortGuardInterval ( void ) const

Return the short guard interval field of HT-SIG.

Returns: the short guard interval field of HT-SIG

Definition at line 439 of file wifi-phy-header.cc.

References m_sgi.

Referenced by ns3::WifiPhy::StartReceivePreamble().

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◆ GetTypeId()

TypeId ns3::HtSigHeader::GetTypeId ( void )

static

Get the type ID.

Returns: the object TypeId

Definition at line 351 of file wifi-phy-header.cc.

References ns3::TypeId::SetParent().

Referenced by GetInstanceTypeId().

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◆ Print()

void ns3::HtSigHeader::Print ( std::ostream & os ) const

virtual

Parameters

os output stream This method is used by Packet::Print to print the content of a header as ascii data to a c++ output stream. Although the header is free to format its output as it wishes, it is recommended to follow a few rules to integrate with the packet pretty printer: start with flags, small field values located between a pair of parens. Values should be separated by whitespace. Follow the parens with the important fields, separated by whitespace. i.e.: (field1 val1 field2 val2 field3 val3) field4 val4 field5 val5

Implements ns3::Header.

Definition at line 368 of file wifi-phy-header.cc.

References GetChannelWidth(), m_aggregation, m_htLength, m_mcs, and m_sgi.

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◆ Serialize()

void ns3::HtSigHeader::Serialize ( Buffer::Iterator start ) const

virtual

Parameters

start an iterator which points to where the header should be written.

This method is used by Packet::AddHeader to store a header into the byte buffer of a packet. The data written is expected to match bit-for-bit the representation of this header in a real network.

Implements ns3::Header.

Definition at line 445 of file wifi-phy-header.cc.

References m_aggregation, m_cbw20_40, m_htLength, m_mcs, m_sgi, and visualizer.core::start().

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