SatRequestManager analyzes periodically or on-a-need-basis UT's buffer status for different RC indices (= queues), and sends Capacity Requests to NCC according to need and lower layer service configuration. More...

#include "satellite-request-manager.h"

Inheritance diagram for ns3::SatRequestManager:

Collaboration diagram for ns3::SatRequestManager:

Public Types
typedef void(*	AvbdcTraceCallback) (uint32_t requestSize)
	Callback signature for AvbdcTrace trace source.
typedef void(*	CapacityRequestTraceCallback) (Time time, Mac48Address address, Ptr< SatCrMessage > message)
	Callback signature for CrTrace trace source.
typedef void(*	CapacityRequestTraceLogCallback) (std::string traceLog)
	Callback signature for CrLogTrace trace source.
typedef Callback< bool >	CtrlMsgTxPossibleCallback
	Callback to check whether control msg transmission is possible.
typedef Callback< bool >	LogonMsgTxPossibleCallback
	Callback to check whether logon msg transmission is possible.
typedef std::vector< std::deque< std::pair< Time, uint32_t > > >	PendingRbdcRequestsContainer_t
	Container for the pending RBDC requests.
typedef Callback< SatQueue::QueueStats_t, bool >	QueueCallback
	Callback to fetch queue statistics.
typedef void(*	RbdcTraceCallback) (uint32_t requestSize)
	Callback signature for RbdcTrace trace source.
typedef Callback< bool, Ptr< SatControlMessage >, const Address & >	SendCtrlCallback
	Control message sending callback.
typedef void(*	VbdcTraceCallback) (uint32_t requestSize)
	Callback signature for VbdcTrace trace source.

Public Member Functions
	SatRequestManager ()
	Default constructor.
virtual	~SatRequestManager ()
	Destructor for SatRequestManager.
void	AddQueueCallback (uint8_t rcIndex, SatRequestManager::QueueCallback cb)
	Add a callback to fetch queue statistics.
void	AssignedDaResources (uint8_t rcIndex, uint32_t bytes)
	Sat UT MAC informs that certain amount of resources have been received in TBTP.
void	CnoUpdated (uint32_t satId, uint32_t beamId, Address sourceMac, Address gwId, double cno, bool isSatelliteMac)
	Update C/N0 information from lower layer.
virtual void	DoDispose ()
	Dispose of this class instance.
void	Initialize (Ptr< SatLowerLayerServiceConf > llsConf, Time superFrameDuration)
void	ReceiveQueueEvent (SatQueue::QueueEvent_t event, uint8_t rcIndex)
	Receive a queue event.
void	SendHandoverRecommendation (uint32_t satId, uint32_t beamId)
	Send a handover recommendation message to the gateway.
void	SendLogonMessage ()
	Send a logon message to the gateway.
void	SetCtrlMsgCallback (SatRequestManager::SendCtrlCallback cb)
	Set the control message sending callback.
void	SetCtrlMsgTxPossibleCallback (SatRequestManager::CtrlMsgTxPossibleCallback cb)
	Set the callback to check the possibility of sending a control message.
void	SetGwAddress (Mac48Address address)
	Set the GW address needed for CR transmission.
void	SetHeaderOffsetVbdc (double headerOffsetVbcd)
	Update the value of header offset.
void	SetLogonMsgTxPossibleCallback (SatRequestManager::LogonMsgTxPossibleCallback cb)
	Set the callback to check the possibility of sending a control message.
void	SetNodeInfo (Ptr< SatNodeInfo > nodeInfo)
	Set the node info of this UT.

Static Public Member Functions
static TypeId	GetTypeId (void)
	inherited from Object

Private Types
typedef std::map< uint8_t, QueueCallback >	CallbackContainer_t

Private Member Functions
void	CheckForVolumeBacklogPersistence ()
	Check whether VBDC volume backlog persistence shall expire and whether UT should update request by AVBDC due pending requests.
void	DoEvaluation ()
	Do evaluation of the buffer status and decide whether or not to send CRs.
void	DoPeriodicalEvaluation ()
	Periodically check the buffer status and whether a new CR is needed to be sent.
uint32_t	DoRbdc (uint8_t rc, const SatQueue::QueueStats_t &stats)
	Do RBDC calculation for a RC.
uint32_t	DoRbdcLegacy (uint8_t rc, const SatQueue::QueueStats_t &stats)
	Legacy algorithm to do RBDC calculation for a RC.
SatEnums::SatCapacityAllocationCategory_t	DoVbdc (uint8_t rc, const SatQueue::QueueStats_t &stats, uint32_t &rcVbdcBytes)
	Do VBDC calculation for a RC.
SatEnums::SatCapacityAllocationCategory_t	DoVbdcLegacy (uint8_t rc, const SatQueue::QueueStats_t &stats, uint32_t &rcVbdcBytes)
	Legacy algorithm to do VBDC calculation for a RC.
uint32_t	GetAvbdcBytes (uint8_t rc, const SatQueue::QueueStats_t &stats)
	Calculate the needed AVBDC bytes for a RC.
uint32_t	GetPendingRbdcSumKbps (uint8_t rc)
	Calculate the pending RBDC requests related to a specific RC.
uint16_t	GetQuantizedRbdcValue (uint8_t index, uint16_t reqRbdcKbps) const
	The RBDC value is signalled with 8 bits, which means that to be able to signal larger than 256 values, we need to use quantization and coding to convert the raw values into defined discrete values.
uint16_t	GetQuantizedVbdcValue (uint8_t index, uint16_t reqVbdcBytes) const
	The RBDC value is signalled with 8 bits, which means that to be able to signal larger than 256 values, we need to use quantization and coding to convert the raw values into defined discrete values.
uint32_t	GetVbdcBytes (uint8_t rc, const SatQueue::QueueStats_t &stats)
	Calculate the needed VBDC bytes for a RC.
void	RemoveOldEntriesFromPendingRbdcContainer (uint8_t rc)
	Clean-up the pending RBDC container from old samples.
void	Reset (uint8_t rc)
	Reset RC index counters.
void	ResetAssignedResources ()
	Reset the assigned resources counter.
void	SendCapacityRequest (Ptr< SatCrMessage > crMsg)
	Send the capacity request control msg via txCallback to SatNetDevice.
void	SendCnoReport ()
	Send the C/N0 report message via txCallback to SatNetDevice.
void	UpdatePendingRbdcCounters (uint8_t rc, uint32_t kbps)
	Update the pending RBDC counters with new request information.
void	UpdatePendingVbdcCounters ()
	Update pending VBDC counters for all RCs.
void	UpdatePendingVbdcCounters (uint8_t rc)
	Update the pending VBDC counters with new request information.

Private Attributes
std::vector< uint32_t >	m_assignedDaResourcesBytes
	Dedicated assignments received within the previous superframe.
TracedCallback< uint32_t >	m_aVbdcTrace
EventId	m_cnoReportEvent
	Event id for the C/NO report.
Time	m_cnoReportInterval
	Interval to send C/N0 report.
TracedCallback< Time, Mac48Address, Ptr< SatCrMessage > >	m_crTrace
	Trace callback used for CR tracing.
TracedCallback< std::string >	m_crTraceLog
	Trace callback used for CR tracing.
SendCtrlCallback	m_ctrlCallback
	Callback to send control messages.
CtrlMsgTxPossibleCallback	m_ctrlMsgTxPossibleCallback
	Callback to check from MAC if a control msg may be transmitted in the near future.
bool	m_enableOnDemandEvaluation
	Enable on demand / ad hoc CR evaluation.
Time	m_evaluationInterval
	Interval to do the periodical CR evaluation.
bool	m_forcedAvbdcUpdate
	Flag indicating that UT should send a forced AVBDC request, since the volume backlog persistence shall expire and UT still has pending requested bytes.
double	m_gainValueK
	Gain value K for the RBDC calculation.
Mac48Address	m_gwAddress
	GW address.
double	m_headerOffsetVbcd
	Additional VBDC to add to take into account E2E header in regenerative LINK or NETWORK, and in worst case.
double	m_lastCno
	The last received on E2E C/N0 information from lower layer in linear format.
double	m_lastSatelliteCno
	The last received user link C/N0 information from lower layer in linear format.
Time	m_lastVbdcCrSent
	Time when the last CR including VBDC request was sent.
Ptr< SatLowerLayerServiceConf >	m_llsConf
	Lower layer services conf pointer, which holds the configurations for RCs and capacity allocation categories.
LogonMsgTxPossibleCallback	m_logonMsgTxPossibleCallback
	Callback to check from MAC if a logon msg may be transmitted in the near future.
Ptr< SatNodeInfo >	m_nodeInfo
	Node information.
uint32_t	m_numValues
double	m_overEstimationFactor
	Over-estimation factor used for estimating a bit more resources than there are in the buffers.
PendingRbdcRequestsContainer_t	m_pendingRbdcRequestsKbps
	Key = RC index Value -> Key = Time when the request was sent Value -> Value = Requested bitrate or bytes.
std::vector< uint32_t >	m_pendingVbdcBytes
	Pending VBDC counter for each RC index.
std::vector< Time >	m_previousEvaluationTime
	Time when CR evaluation was previously done.
CallbackContainer_t	m_queueCallbacks
	The queue enque/deque rate getter callback.
SatEnums::RbdcCapacityRequestAlgorithm_t	m_rbdcCapacityRequestAlgorithm
	The RBDC capacity algorithm to use.
TracedCallback< uint32_t >	m_rbdcTrace
	Traced callbacks for all sent RBDC and VBDC capacity requests.
Time	m_rttEstimate
	Round trip time estimate.
Mac48Address	m_satAddress
	SAT address.
Time	m_superFrameDuration
	Superframe duration used for updating the volume backlog persistence.
SatEnums::VbdcCapacityRequestAlgorithm_t	m_vbdcCapacityRequestAlgorithm
	The VBDC capacity algorithm to use.
TracedCallback< uint32_t >	m_vbdcTrace

Static Private Attributes
static const uint32_t	m_rbdcScalingFactors [4] = {1, 4, 16, 64}
static const uint32_t	m_vbdcScalingFactors [4] = {1, 8, 64, 512}

Detailed Description

SatRequestManager analyzes periodically or on-a-need-basis UT's buffer status for different RC indices (= queues), and sends Capacity Requests to NCC according to need and lower layer service configuration.

Request manager supports currently RBDC, AVBDC and VBDC request classes. However, RBDC and VBDC may not be configured in the same simulation for the same RC index.

Definition at line 53 of file satellite-request-manager.h.

Member Typedef Documentation

◆ AvbdcTraceCallback

typedef void(* ns3::SatRequestManager::AvbdcTraceCallback) (uint32_t requestSize)

Callback signature for AvbdcTrace trace source.

Parameters

requestSize amount of requested size via AVBDC (in bytes).

Definition at line 223 of file satellite-request-manager.h.

◆ CallbackContainer_t

typedef std::map<uint8_t, QueueCallback> ns3::SatRequestManager::CallbackContainer_t

private

Definition at line 244 of file satellite-request-manager.h.

◆ CapacityRequestTraceCallback

typedef void(* ns3::SatRequestManager::CapacityRequestTraceCallback) (Time time, Mac48Address address, Ptr< SatCrMessage > message)

Callback signature for CrTrace trace source.

Parameters

time	the current simulation time.
address	the MAC address of the current node.
message	the CR message to be transmitted.

Definition at line 189 of file satellite-request-manager.h.

◆ CapacityRequestTraceLogCallback

typedef void(* ns3::SatRequestManager::CapacityRequestTraceLogCallback) (std::string traceLog)

Callback signature for CrLogTrace trace source.

Parameters

traceLog

A string containing the following information:

the current simulation time (in seconds),
node ID,
RC index,
type of capacity allocation category, e.g., RBDC, VBDC, or AVBDC,
request size (in kbps for RBDC or in bytes for VBDC), and
queue size (in bytes).

Definition at line 205 of file satellite-request-manager.h.

◆ CtrlMsgTxPossibleCallback

typedef Callback<bool> ns3::SatRequestManager::CtrlMsgTxPossibleCallback

Callback to check whether control msg transmission is possible.

Returns: boolean indicating whether control msg transmission is possible

Definition at line 95 of file satellite-request-manager.h.

◆ LogonMsgTxPossibleCallback

typedef Callback<bool> ns3::SatRequestManager::LogonMsgTxPossibleCallback

Callback to check whether logon msg transmission is possible.

Returns: boolean indicating whether logon msg transmission is possible

Definition at line 101 of file satellite-request-manager.h.

◆ PendingRbdcRequestsContainer_t

typedef std::vector<std::deque<std::pair<Time, uint32_t> > > ns3::SatRequestManager::PendingRbdcRequestsContainer_t

Container for the pending RBDC requests.

Definition at line 106 of file satellite-request-manager.h.

◆ QueueCallback

typedef Callback<SatQueue::QueueStats_t, bool> ns3::SatRequestManager::QueueCallback

Callback to fetch queue statistics.

Definition at line 81 of file satellite-request-manager.h.

◆ RbdcTraceCallback

typedef void(* ns3::SatRequestManager::RbdcTraceCallback) (uint32_t requestSize)

Callback signature for RbdcTrace trace source.

Parameters

requestSize amount of requested size via RBDC (in kbps).

Definition at line 211 of file satellite-request-manager.h.

◆ SendCtrlCallback

typedef Callback<bool, Ptr<SatControlMessage>, const Address&> ns3::SatRequestManager::SendCtrlCallback

Control message sending callback.

Parameters

Ptr<SatControlMessage>	The message to be sent
Address	Packet destination address

Returns: boolean indicating whether the send was successful

Definition at line 89 of file satellite-request-manager.h.

◆ VbdcTraceCallback

typedef void(* ns3::SatRequestManager::VbdcTraceCallback) (uint32_t requestSize)

Callback signature for VbdcTrace trace source.

Parameters

requestSize amount of requested size via VBDC (in bytes).

Definition at line 217 of file satellite-request-manager.h.

Constructor & Destructor Documentation

◆ SatRequestManager()

ns3::SatRequestManager::SatRequestManager ( )

Default constructor.

Definition at line 53 of file satellite-request-manager.cc.

References m_cnoReportInterval, m_enableOnDemandEvaluation, m_evaluationInterval, m_forcedAvbdcUpdate, m_gainValueK, m_gwAddress, m_headerOffsetVbcd, m_lastCno, m_lastVbdcCrSent, m_llsConf, m_numValues, m_overEstimationFactor, m_pendingRbdcRequestsKbps, m_pendingVbdcBytes, m_previousEvaluationTime, m_rbdcCapacityRequestAlgorithm, m_rttEstimate, m_satAddress, m_superFrameDuration, and m_vbdcCapacityRequestAlgorithm.

◆ ~SatRequestManager()

ns3::SatRequestManager::~SatRequestManager ( )

virtual

Destructor for SatRequestManager.

Definition at line 78 of file satellite-request-manager.cc.

Member Function Documentation

◆ AddQueueCallback()

void ns3::SatRequestManager::AddQueueCallback	(	uint8_t	rcIndex,
		SatRequestManager::QueueCallback	cb )

Add a callback to fetch queue statistics.

Parameters

rcIndex	RC identifier
cb	Callback

Definition at line 385 of file satellite-request-manager.cc.

References m_queueCallbacks.

◆ AssignedDaResources()

void ns3::SatRequestManager::AssignedDaResources	(	uint8_t	rcIndex,
		uint32_t	bytes )

Sat UT MAC informs that certain amount of resources have been received in TBTP.

Parameters

rcIndex	RC index
bytes	Amount of bytes assigned to this UT in TBTP.

Definition at line 933 of file satellite-request-manager.cc.

References m_assignedDaResourcesBytes.

Referenced by ns3::SatUtHelperDvb::Install().

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◆ CheckForVolumeBacklogPersistence()

void ns3::SatRequestManager::CheckForVolumeBacklogPersistence ( )

private

Check whether VBDC volume backlog persistence shall expire and whether UT should update request by AVBDC due pending requests.

Definition at line 702 of file satellite-request-manager.cc.

References m_forcedAvbdcUpdate, m_lastVbdcCrSent, m_llsConf, m_pendingVbdcBytes, and m_superFrameDuration.

Referenced by DoEvaluation().

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◆ CnoUpdated()

void ns3::SatRequestManager::CnoUpdated	(	uint32_t	satId,
		uint32_t	beamId,
		Address	sourceMac,
		Address	gwId,
		double	cno,
		bool	isSatelliteMac )

Update C/N0 information from lower layer.

The SatUtMac receives C/N0 information of packet receptions from GW to update this information to serving GW periodically.

Parameters

satId	The id of the satellite where C/N0 is from.
beamId	The id of the beam where C/N0 is from.
sourceMac	The MAC address of the source from where we measured C/N0.
gwId	The id of the GW.
cno	Value of the C/N0.
isSatelliteMac	If true, cno corresponds to link SAT to UT; if false, cno corresponds to link GW to UT

Definition at line 428 of file satellite-request-manager.cc.

References m_lastCno, m_lastSatelliteCno, and m_satAddress.

Referenced by ns3::SatUtHelperDvb::Install().

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◆ DoDispose()

void ns3::SatRequestManager::DoDispose ( )

virtual

Dispose of this class instance.

Definition at line 183 of file satellite-request-manager.cc.

References m_ctrlCallback, m_ctrlMsgTxPossibleCallback, m_llsConf, m_logonMsgTxPossibleCallback, and m_queueCallbacks.

◆ DoEvaluation()

void ns3::SatRequestManager::DoEvaluation ( )

private

Do evaluation of the buffer status and decide whether or not to send CRs.

TODO: Add the functionality here which handles a RC with both RBDC and VBDC enabled at the same time!

Definition at line 234 of file satellite-request-manager.cc.

References CheckForVolumeBacklogPersistence(), ns3::SatEnums::DA_AVBDC, ns3::SatEnums::DA_RBDC, DoRbdc(), DoVbdc(), ns3::SatEnums::GetCapacityAllocationCategory(), m_aVbdcTrace, m_crTraceLog, m_ctrlMsgTxPossibleCallback, m_headerOffsetVbcd, ns3::SatQueue::QueueStats_t::m_incomingRateKbps, m_lastVbdcCrSent, m_llsConf, m_nodeInfo, ns3::SatQueue::QueueStats_t::m_outgoingRateKbps, m_previousEvaluationTime, m_queueCallbacks, ns3::SatQueue::QueueStats_t::m_queueSizeBytes, m_rbdcTrace, m_vbdcTrace, ns3::SatQueue::QueueStats_t::m_volumeInBytes, ns3::SatQueue::QueueStats_t::m_volumeOutBytes, ResetAssignedResources(), SendCapacityRequest(), and UpdatePendingVbdcCounters().

Referenced by DoPeriodicalEvaluation(), and ReceiveQueueEvent().

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◆ DoPeriodicalEvaluation()

void ns3::SatRequestManager::DoPeriodicalEvaluation ( )

private

Periodically check the buffer status and whether a new CR is needed to be sent.

Definition at line 223 of file satellite-request-manager.cc.

References DoEvaluation(), DoPeriodicalEvaluation(), and m_evaluationInterval.

Referenced by DoPeriodicalEvaluation(), and Initialize().

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◆ DoRbdc()

uint32_t ns3::SatRequestManager::DoRbdc	(	uint8_t	rc,
		const SatQueue::QueueStats_t &	stats )

private

Do RBDC calculation for a RC.

Parameters

rc	Request class index
stats	Queue statistics

Returns: uint32_t Requested bytes

Definition at line 451 of file satellite-request-manager.cc.

References ns3::SatEnums::CR_RBDC_LEGACY, DoRbdcLegacy(), and m_rbdcCapacityRequestAlgorithm.

Referenced by DoEvaluation().

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◆ DoRbdcLegacy()

uint32_t ns3::SatRequestManager::DoRbdcLegacy	(	uint8_t	rc,
		const SatQueue::QueueStats_t &	stats )

private

Legacy algorithm to do RBDC calculation for a RC.

Parameters

rc	Request class index
stats	Queue statistics

Returns: uint32_t Requested bytes

Definition at line 470 of file satellite-request-manager.cc.

References ns3::SatConstVariables::BITS_IN_KBIT, ns3::SatConstVariables::BITS_PER_BYTE, GetPendingRbdcSumKbps(), GetQuantizedRbdcValue(), m_gainValueK, ns3::SatQueue::QueueStats_t::m_incomingRateKbps, m_llsConf, m_overEstimationFactor, m_previousEvaluationTime, ns3::SatQueue::QueueStats_t::m_queueSizeBytes, and UpdatePendingRbdcCounters().

Referenced by DoRbdc().

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◆ DoVbdc()

SatEnums::SatCapacityAllocationCategory_t ns3::SatRequestManager::DoVbdc	(	uint8_t	rc,
		const SatQueue::QueueStats_t &	stats,
		uint32_t &	rcVbdcBytes )

private

Do VBDC calculation for a RC.

Parameters

rc	Request class index
stats	Queue statistics
&vbdcBytes	Reference to vbdcBytes

Returns: SatCapacityAllocationCategory_t Capacity allocation category

Definition at line 547 of file satellite-request-manager.cc.

References ns3::SatEnums::CR_VBDC_LEGACY, ns3::SatEnums::DA_UNKNOWN, DoVbdcLegacy(), and m_vbdcCapacityRequestAlgorithm.

Referenced by DoEvaluation().

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◆ DoVbdcLegacy()

SatEnums::SatCapacityAllocationCategory_t ns3::SatRequestManager::DoVbdcLegacy	(	uint8_t	rc,
		const SatQueue::QueueStats_t &	stats,
		uint32_t &	rcVbdcBytes )

private

Legacy algorithm to do VBDC calculation for a RC.

Parameters

rc	Request class index
stats	Queue statistics
&vbdcBytes	Reference to vbdcBytes

Returns: SatCapacityAllocationCategory_t Capacity allocation category

Definition at line 566 of file satellite-request-manager.cc.

References ns3::SatEnums::DA_AVBDC, ns3::SatEnums::DA_VBDC, GetAvbdcBytes(), GetVbdcBytes(), m_forcedAvbdcUpdate, m_pendingVbdcBytes, and ns3::SatQueue::QueueStats_t::m_volumeInBytes.

Referenced by DoVbdc().

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◆ GetAvbdcBytes()

uint32_t ns3::SatRequestManager::GetAvbdcBytes	(	uint8_t	rc,
		const SatQueue::QueueStats_t &	stats )

private

Calculate the needed AVBDC bytes for a RC.

Parameters

rc	Request class index
stats	Queue statistics

Returns: Requested AVBDC kilobytes

Definition at line 610 of file satellite-request-manager.cc.

References ns3::SatConstVariables::BITS_IN_KBIT, ns3::SatConstVariables::BITS_PER_BYTE, GetQuantizedVbdcValue(), m_llsConf, m_overEstimationFactor, m_pendingVbdcBytes, m_previousEvaluationTime, ns3::SatQueue::QueueStats_t::m_queueSizeBytes, and Reset().

Referenced by DoVbdcLegacy().

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◆ GetPendingRbdcSumKbps()

uint32_t ns3::SatRequestManager::GetPendingRbdcSumKbps ( uint8_t rc )

private

Calculate the pending RBDC requests related to a specific RC.

Parameters

rc	Request class index

Returns: Pending sum in kbps or Bytes

Definition at line 733 of file satellite-request-manager.cc.

References m_pendingRbdcRequestsKbps, and RemoveOldEntriesFromPendingRbdcContainer().

Referenced by DoRbdcLegacy().

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◆ GetQuantizedRbdcValue()

uint16_t ns3::SatRequestManager::GetQuantizedRbdcValue	(	uint8_t	index,
		uint16_t	reqRbdcKbps ) const

private

The RBDC value is signalled with 8 bits, which means that to be able to signal larger than 256 values, we need to use quantization and coding to convert the raw values into defined discrete values.

Parameters

index	RC index
reqRbdcKbps	Raw RBDC request

Returns: uint16_t Quantized RBDC value

Definition at line 963 of file satellite-request-manager.cc.

References m_llsConf, m_numValues, and m_rbdcScalingFactors.

Referenced by DoRbdcLegacy().

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◆ GetQuantizedVbdcValue()

uint16_t ns3::SatRequestManager::GetQuantizedVbdcValue	(	uint8_t	index,
		uint16_t	reqVbdcBytes ) const

private

The RBDC value is signalled with 8 bits, which means that to be able to signal larger than 256 values, we need to use quantization and coding to convert the raw values into defined discrete values.

Parameters

index	RC index
reqVbdcBytes	Raw VBDC request in Bytes

Returns: uint16_t Quantized VBDC value

Definition at line 994 of file satellite-request-manager.cc.

References ns3::SatConstVariables::BYTES_IN_KBYTE, m_llsConf, m_numValues, and m_vbdcScalingFactors.

Referenced by GetAvbdcBytes(), and GetVbdcBytes().

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◆ GetTypeId()

TypeId ns3::SatRequestManager::GetTypeId ( void )

static

inherited from Object

Definition at line 111 of file satellite-request-manager.cc.

References ns3::SatEnums::CR_RBDC_LEGACY, ns3::SatEnums::CR_VBDC_LEGACY, m_aVbdcTrace, m_cnoReportInterval, m_crTrace, m_crTraceLog, m_enableOnDemandEvaluation, m_evaluationInterval, m_gainValueK, m_overEstimationFactor, m_rbdcCapacityRequestAlgorithm, m_rbdcTrace, m_rttEstimate, m_vbdcCapacityRequestAlgorithm, and m_vbdcTrace.

◆ GetVbdcBytes()

uint32_t ns3::SatRequestManager::GetVbdcBytes	(	uint8_t	rc,
		const SatQueue::QueueStats_t &	stats )

private

Calculate the needed VBDC bytes for a RC.

Parameters

rc	Request class index
stats	Queue statistics

Returns: Requested VBDC kilobytes

Definition at line 655 of file satellite-request-manager.cc.

References ns3::SatConstVariables::BITS_IN_KBIT, ns3::SatConstVariables::BITS_PER_BYTE, GetQuantizedVbdcValue(), m_llsConf, m_overEstimationFactor, m_pendingVbdcBytes, m_previousEvaluationTime, and ns3::SatQueue::QueueStats_t::m_volumeInBytes.

Referenced by DoVbdcLegacy().

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◆ Initialize()

void ns3::SatRequestManager::Initialize	(	Ptr< SatLowerLayerServiceConf >	llsConf,
		Time	superFrameDuration )

Definition at line 83 of file satellite-request-manager.cc.

References DoPeriodicalEvaluation(), m_assignedDaResourcesBytes, m_cnoReportEvent, m_cnoReportInterval, m_evaluationInterval, m_llsConf, m_nodeInfo, m_pendingRbdcRequestsKbps, m_pendingVbdcBytes, m_previousEvaluationTime, m_superFrameDuration, and SendCnoReport().

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◆ ReceiveQueueEvent()

void ns3::SatRequestManager::ReceiveQueueEvent	(	SatQueue::QueueEvent_t	event,
		uint8_t	rcIndex )

Receive a queue event.

Parameters

event	Queue event from SatQueue
rcIndex	RC identifier of the queue

Definition at line 205 of file satellite-request-manager.cc.

References DoEvaluation(), ns3::SatQueue::FIRST_BUFFERED_PKT, and m_enableOnDemandEvaluation.

Referenced by ns3::SatUtLlc::CreateEncap(), and ns3::SatUtHelperDvb::Install().

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◆ RemoveOldEntriesFromPendingRbdcContainer()

void ns3::SatRequestManager::RemoveOldEntriesFromPendingRbdcContainer ( uint8_t rc )

private

Clean-up the pending RBDC container from old samples.

Parameters

rc	Request class index

Definition at line 768 of file satellite-request-manager.cc.

References m_pendingRbdcRequestsKbps, and m_rttEstimate.

Referenced by GetPendingRbdcSumKbps().

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◆ Reset()

void ns3::SatRequestManager::Reset ( uint8_t rc )

private

Reset RC index counters.

Parameters

rc RC index

Definition at line 954 of file satellite-request-manager.cc.

References m_assignedDaResourcesBytes, and m_pendingVbdcBytes.

Referenced by GetAvbdcBytes().

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◆ ResetAssignedResources()

void ns3::SatRequestManager::ResetAssignedResources ( )

private

Reset the assigned resources counter.

Definition at line 943 of file satellite-request-manager.cc.

References m_assignedDaResourcesBytes, and m_llsConf.

Referenced by DoEvaluation().

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◆ SendCapacityRequest()

void ns3::SatRequestManager::SendCapacityRequest ( Ptr< SatCrMessage > crMsg )

private

Send the capacity request control msg via txCallback to SatNetDevice.

Parameters

crMsg Created capacity request

Definition at line 825 of file satellite-request-manager.cc.

References m_cnoReportEvent, m_cnoReportInterval, m_crTrace, m_ctrlCallback, m_gwAddress, m_lastCno, m_nodeInfo, and SendCnoReport().

Referenced by DoEvaluation().

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◆ SendCnoReport()

void ns3::SatRequestManager::SendCnoReport ( )

private

Send the C/N0 report message via txCallback to SatNetDevice.

Definition at line 854 of file satellite-request-manager.cc.

References m_cnoReportEvent, m_cnoReportInterval, m_ctrlCallback, m_ctrlMsgTxPossibleCallback, m_gwAddress, m_lastCno, m_lastSatelliteCno, m_satAddress, and SendCnoReport().

Referenced by Initialize(), SendCapacityRequest(), and SendCnoReport().

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◆ SendHandoverRecommendation()

void ns3::SatRequestManager::SendHandoverRecommendation	(	uint32_t	satId,
		uint32_t	beamId )

Send a handover recommendation message to the gateway.

Parameters

satId	The sat ID to switch to
beamId	The beam ID to switch to

Definition at line 892 of file satellite-request-manager.cc.

References m_ctrlCallback, m_ctrlMsgTxPossibleCallback, and m_gwAddress.

Referenced by ns3::SatUtHelperDvb::Install().

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◆ SendLogonMessage()

void ns3::SatRequestManager::SendLogonMessage ( )

Send a logon message to the gateway.

Definition at line 911 of file satellite-request-manager.cc.

References m_ctrlCallback, m_gwAddress, and m_logonMsgTxPossibleCallback.

Referenced by ns3::SatUtHelperDvb::Install().

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◆ SetCtrlMsgCallback()

void ns3::SatRequestManager::SetCtrlMsgCallback ( SatRequestManager::SendCtrlCallback cb )

Set the control message sending callback.

Parameters

cb	callback to send control messages.

Definition at line 392 of file satellite-request-manager.cc.

References m_ctrlCallback.

◆ SetCtrlMsgTxPossibleCallback()

void ns3::SatRequestManager::SetCtrlMsgTxPossibleCallback ( SatRequestManager::CtrlMsgTxPossibleCallback cb )

Set the callback to check the possibility of sending a control message.

Parameters

cb	callback to check whether ctrl message sending is possible.

Definition at line 399 of file satellite-request-manager.cc.

References m_ctrlMsgTxPossibleCallback.

◆ SetGwAddress()

void ns3::SatRequestManager::SetGwAddress ( Mac48Address address )

Set the GW address needed for CR transmission.

Parameters

address GW MAC address

Definition at line 413 of file satellite-request-manager.cc.

References m_gwAddress.

Referenced by ns3::SatUtHelperDvb::Install().

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◆ SetHeaderOffsetVbdc()

void ns3::SatRequestManager::SetHeaderOffsetVbdc ( double headerOffsetVbcd )

Update the value of header offset.

Parameters

headerOffsetVbcd The new value of header offset

Definition at line 927 of file satellite-request-manager.cc.

References m_headerOffsetVbcd.

◆ SetLogonMsgTxPossibleCallback()

void ns3::SatRequestManager::SetLogonMsgTxPossibleCallback ( SatRequestManager::LogonMsgTxPossibleCallback cb )

Set the callback to check the possibility of sending a control message.

Parameters

cb	callback to check whether ctrl message sending is possible.

Definition at line 406 of file satellite-request-manager.cc.

References m_logonMsgTxPossibleCallback.

◆ SetNodeInfo()

void ns3::SatRequestManager::SetNodeInfo ( Ptr< SatNodeInfo > nodeInfo )

Set the node info of this UT.

Parameters

nodeInfo Node information pointer

Definition at line 420 of file satellite-request-manager.cc.

References m_nodeInfo.

◆ UpdatePendingRbdcCounters()

void ns3::SatRequestManager::UpdatePendingRbdcCounters	(	uint8_t	rc,
		uint32_t	kbps )

private

Update the pending RBDC counters with new request information.

Parameters

rc	Request class index
kbps	Requested value in kbps or Bytes

Definition at line 755 of file satellite-request-manager.cc.

References m_pendingRbdcRequestsKbps.

Referenced by DoRbdcLegacy().

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◆ UpdatePendingVbdcCounters() [1/2]

void ns3::SatRequestManager::UpdatePendingVbdcCounters ( )

private

Update pending VBDC counters for all RCs.

Definition at line 790 of file satellite-request-manager.cc.

References m_llsConf, and UpdatePendingVbdcCounters().

Referenced by DoEvaluation(), and UpdatePendingVbdcCounters().

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◆ UpdatePendingVbdcCounters() [2/2]

void ns3::SatRequestManager::UpdatePendingVbdcCounters ( uint8_t rc )

private

Update the pending VBDC counters with new request information.

Parameters

rc	Request class index

Definition at line 801 of file satellite-request-manager.cc.

References m_assignedDaResourcesBytes, and m_pendingVbdcBytes.

Member Data Documentation

◆ m_assignedDaResourcesBytes

std::vector<uint32_t> ns3::SatRequestManager::m_assignedDaResourcesBytes

private

Dedicated assignments received within the previous superframe.

Definition at line 505 of file satellite-request-manager.h.

Referenced by AssignedDaResources(), Initialize(), Reset(), ResetAssignedResources(), and UpdatePendingVbdcCounters().

◆ m_aVbdcTrace

TracedCallback<uint32_t> ns3::SatRequestManager::m_aVbdcTrace

private

Definition at line 546 of file satellite-request-manager.h.

Referenced by DoEvaluation(), and GetTypeId().

◆ m_cnoReportEvent

EventId ns3::SatRequestManager::m_cnoReportEvent

private

Event id for the C/NO report.

Definition at line 455 of file satellite-request-manager.h.

Referenced by Initialize(), SendCapacityRequest(), and SendCnoReport().

◆ m_cnoReportInterval

Time ns3::SatRequestManager::m_cnoReportInterval

private

Interval to send C/N0 report.

Definition at line 450 of file satellite-request-manager.h.

Referenced by SatRequestManager(), GetTypeId(), Initialize(), SendCapacityRequest(), and SendCnoReport().

◆ m_crTrace

TracedCallback<Time, Mac48Address, Ptr<SatCrMessage> > ns3::SatRequestManager::m_crTrace

private

Trace callback used for CR tracing.

Definition at line 531 of file satellite-request-manager.h.

Referenced by GetTypeId(), and SendCapacityRequest().

◆ m_crTraceLog

TracedCallback<std::string> ns3::SatRequestManager::m_crTraceLog

private

Trace callback used for CR tracing.

Definition at line 536 of file satellite-request-manager.h.

Referenced by DoEvaluation(), and GetTypeId().

◆ m_ctrlCallback

SendCtrlCallback ns3::SatRequestManager::m_ctrlCallback

private

Callback to send control messages.

Definition at line 400 of file satellite-request-manager.h.

Referenced by DoDispose(), SendCapacityRequest(), SendCnoReport(), SendHandoverRecommendation(), SendLogonMessage(), and SetCtrlMsgCallback().

◆ m_ctrlMsgTxPossibleCallback

CtrlMsgTxPossibleCallback ns3::SatRequestManager::m_ctrlMsgTxPossibleCallback

private

Callback to check from MAC if a control msg may be transmitted in the near future.

Definition at line 406 of file satellite-request-manager.h.

Referenced by DoDispose(), DoEvaluation(), SendCnoReport(), SendHandoverRecommendation(), and SetCtrlMsgTxPossibleCallback().

◆ m_enableOnDemandEvaluation

bool ns3::SatRequestManager::m_enableOnDemandEvaluation

private

Enable on demand / ad hoc CR evaluation.

Definition at line 478 of file satellite-request-manager.h.

Referenced by SatRequestManager(), GetTypeId(), and ReceiveQueueEvent().

◆ m_evaluationInterval

Time ns3::SatRequestManager::m_evaluationInterval

private

Interval to do the periodical CR evaluation.

Definition at line 445 of file satellite-request-manager.h.

Referenced by SatRequestManager(), DoPeriodicalEvaluation(), GetTypeId(), and Initialize().

◆ m_forcedAvbdcUpdate

bool ns3::SatRequestManager::m_forcedAvbdcUpdate

private

Flag indicating that UT should send a forced AVBDC request, since the volume backlog persistence shall expire and UT still has pending requested bytes.

Definition at line 522 of file satellite-request-manager.h.

Referenced by SatRequestManager(), CheckForVolumeBacklogPersistence(), and DoVbdcLegacy().

◆ m_gainValueK

double ns3::SatRequestManager::m_gainValueK

private

Gain value K for the RBDC calculation.

Definition at line 460 of file satellite-request-manager.h.

Referenced by SatRequestManager(), DoRbdcLegacy(), and GetTypeId().

◆ m_gwAddress

Mac48Address ns3::SatRequestManager::m_gwAddress

private

GW address.

Definition at line 417 of file satellite-request-manager.h.

Referenced by SatRequestManager(), SendCapacityRequest(), SendCnoReport(), SendHandoverRecommendation(), SendLogonMessage(), and SetGwAddress().

◆ m_headerOffsetVbcd

double ns3::SatRequestManager::m_headerOffsetVbcd

private

Additional VBDC to add to take into account E2E header in regenerative LINK or NETWORK, and in worst case.

Definition at line 562 of file satellite-request-manager.h.

Referenced by SatRequestManager(), DoEvaluation(), and SetHeaderOffsetVbdc().

◆ m_lastCno

double ns3::SatRequestManager::m_lastCno

private

The last received on E2E C/N0 information from lower layer in linear format.

Definition at line 428 of file satellite-request-manager.h.

Referenced by SatRequestManager(), CnoUpdated(), SendCapacityRequest(), and SendCnoReport().

◆ m_lastSatelliteCno

double ns3::SatRequestManager::m_lastSatelliteCno

private

The last received user link C/N0 information from lower layer in linear format.

Definition at line 434 of file satellite-request-manager.h.

Referenced by CnoUpdated(), and SendCnoReport().

◆ m_lastVbdcCrSent

Time ns3::SatRequestManager::m_lastVbdcCrSent

private

Time when the last CR including VBDC request was sent.

Definition at line 510 of file satellite-request-manager.h.

Referenced by SatRequestManager(), CheckForVolumeBacklogPersistence(), and DoEvaluation().

◆ m_llsConf

Ptr<SatLowerLayerServiceConf> ns3::SatRequestManager::m_llsConf

private

Lower layer services conf pointer, which holds the configurations for RCs and capacity allocation categories.

Definition at line 440 of file satellite-request-manager.h.

Referenced by SatRequestManager(), CheckForVolumeBacklogPersistence(), DoDispose(), DoEvaluation(), DoRbdcLegacy(), GetAvbdcBytes(), GetQuantizedRbdcValue(), GetQuantizedVbdcValue(), GetVbdcBytes(), Initialize(), ResetAssignedResources(), and UpdatePendingVbdcCounters().

◆ m_logonMsgTxPossibleCallback

LogonMsgTxPossibleCallback ns3::SatRequestManager::m_logonMsgTxPossibleCallback

private

Callback to check from MAC if a logon msg may be transmitted in the near future.

Definition at line 412 of file satellite-request-manager.h.

Referenced by DoDispose(), SendLogonMessage(), and SetLogonMsgTxPossibleCallback().

◆ m_nodeInfo

Ptr<SatNodeInfo> ns3::SatRequestManager::m_nodeInfo

private

Node information.

Definition at line 500 of file satellite-request-manager.h.

Referenced by DoEvaluation(), Initialize(), SendCapacityRequest(), and SetNodeInfo().

◆ m_numValues

uint32_t ns3::SatRequestManager::m_numValues

private

Definition at line 524 of file satellite-request-manager.h.

Referenced by SatRequestManager(), GetQuantizedRbdcValue(), and GetQuantizedVbdcValue().

◆ m_overEstimationFactor

double ns3::SatRequestManager::m_overEstimationFactor

private

Over-estimation factor used for estimating a bit more resources than there are in the buffers.

The purpose is to compensate the RLE and FPDU header overhead.

Definition at line 473 of file satellite-request-manager.h.

Referenced by SatRequestManager(), DoRbdcLegacy(), GetAvbdcBytes(), GetTypeId(), and GetVbdcBytes().

◆ m_pendingRbdcRequestsKbps

PendingRbdcRequestsContainer_t ns3::SatRequestManager::m_pendingRbdcRequestsKbps

private

Key = RC index Value -> Key = Time when the request was sent Value -> Value = Requested bitrate or bytes.

Definition at line 485 of file satellite-request-manager.h.

Referenced by SatRequestManager(), GetPendingRbdcSumKbps(), Initialize(), RemoveOldEntriesFromPendingRbdcContainer(), and UpdatePendingRbdcCounters().

◆ m_pendingVbdcBytes

std::vector<uint32_t> ns3::SatRequestManager::m_pendingVbdcBytes

private

Pending VBDC counter for each RC index.

Definition at line 490 of file satellite-request-manager.h.

Referenced by SatRequestManager(), CheckForVolumeBacklogPersistence(), DoVbdcLegacy(), GetAvbdcBytes(), GetVbdcBytes(), Initialize(), Reset(), and UpdatePendingVbdcCounters().

◆ m_previousEvaluationTime

std::vector<Time> ns3::SatRequestManager::m_previousEvaluationTime

private

Time when CR evaluation was previously done.

Definition at line 495 of file satellite-request-manager.h.

Referenced by SatRequestManager(), DoEvaluation(), DoRbdcLegacy(), GetAvbdcBytes(), GetVbdcBytes(), and Initialize().

◆ m_queueCallbacks

CallbackContainer_t ns3::SatRequestManager::m_queueCallbacks

private

The queue enque/deque rate getter callback.

Definition at line 395 of file satellite-request-manager.h.

Referenced by AddQueueCallback(), DoDispose(), and DoEvaluation().

◆ m_rbdcCapacityRequestAlgorithm

SatEnums::RbdcCapacityRequestAlgorithm_t ns3::SatRequestManager::m_rbdcCapacityRequestAlgorithm

private

The RBDC capacity algorithm to use.

Definition at line 551 of file satellite-request-manager.h.

Referenced by SatRequestManager(), DoRbdc(), and GetTypeId().

◆ m_rbdcScalingFactors

const uint32_t ns3::SatRequestManager::m_rbdcScalingFactors = {1, 4, 16, 64}

staticprivate

Definition at line 525 of file satellite-request-manager.h.

Referenced by GetQuantizedRbdcValue().

◆ m_rbdcTrace

TracedCallback<uint32_t> ns3::SatRequestManager::m_rbdcTrace

private

Traced callbacks for all sent RBDC and VBDC capacity requests.

Note, that the RC indices are not identified! Thus, if you have two RC indices using the same CAC, the requests may be mixed up at the receiving side.

Definition at line 544 of file satellite-request-manager.h.

Referenced by DoEvaluation(), and GetTypeId().

◆ m_rttEstimate

Time ns3::SatRequestManager::m_rttEstimate

private

Round trip time estimate.

Used to estimate the amount of capacity requests on the air.

Definition at line 466 of file satellite-request-manager.h.

Referenced by SatRequestManager(), GetTypeId(), and RemoveOldEntriesFromPendingRbdcContainer().

◆ m_satAddress

Mac48Address ns3::SatRequestManager::m_satAddress

private

SAT address.

Definition at line 422 of file satellite-request-manager.h.

Referenced by SatRequestManager(), CnoUpdated(), and SendCnoReport().

◆ m_superFrameDuration

Time ns3::SatRequestManager::m_superFrameDuration

private

Superframe duration used for updating the volume backlog persistence.

Definition at line 515 of file satellite-request-manager.h.

Referenced by SatRequestManager(), CheckForVolumeBacklogPersistence(), and Initialize().

◆ m_vbdcCapacityRequestAlgorithm

SatEnums::VbdcCapacityRequestAlgorithm_t ns3::SatRequestManager::m_vbdcCapacityRequestAlgorithm

private

The VBDC capacity algorithm to use.

Definition at line 556 of file satellite-request-manager.h.

Referenced by SatRequestManager(), DoVbdc(), and GetTypeId().

◆ m_vbdcScalingFactors

const uint32_t ns3::SatRequestManager::m_vbdcScalingFactors = {1, 8, 64, 512}

staticprivate

Definition at line 526 of file satellite-request-manager.h.

Referenced by GetQuantizedVbdcValue().

◆ m_vbdcTrace

TracedCallback<uint32_t> ns3::SatRequestManager::m_vbdcTrace

private

Definition at line 545 of file satellite-request-manager.h.

Referenced by DoEvaluation(), and GetTypeId().

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

/builds/sns3/satellite/satellite/model/satellite-request-manager.h
/builds/sns3/satellite/satellite/model/satellite-request-manager.cc

Public Types

Public Member Functions

Static Public Member Functions

Private Types

Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Member Typedef Documentation

◆ AvbdcTraceCallback

◆ CallbackContainer_t

◆ CapacityRequestTraceCallback

◆ CapacityRequestTraceLogCallback

◆ CtrlMsgTxPossibleCallback

◆ LogonMsgTxPossibleCallback

◆ PendingRbdcRequestsContainer_t

◆ QueueCallback

◆ RbdcTraceCallback

◆ SendCtrlCallback

◆ VbdcTraceCallback

Constructor & Destructor Documentation

◆ SatRequestManager()

◆ ~SatRequestManager()

Member Function Documentation

◆ AddQueueCallback()

◆ AssignedDaResources()

◆ CheckForVolumeBacklogPersistence()

◆ CnoUpdated()

◆ DoDispose()

◆ DoEvaluation()

◆ DoPeriodicalEvaluation()

◆ DoRbdc()

◆ DoRbdcLegacy()

◆ DoVbdc()

◆ DoVbdcLegacy()

◆ GetAvbdcBytes()

◆ GetPendingRbdcSumKbps()

◆ GetQuantizedRbdcValue()

◆ GetQuantizedVbdcValue()

◆ GetTypeId()

◆ GetVbdcBytes()

◆ Initialize()

◆ ReceiveQueueEvent()

◆ RemoveOldEntriesFromPendingRbdcContainer()

◆ Reset()

◆ ResetAssignedResources()

◆ SendCapacityRequest()

◆ SendCnoReport()

◆ SendHandoverRecommendation()

◆ SendLogonMessage()

◆ SetCtrlMsgCallback()

◆ SetCtrlMsgTxPossibleCallback()

◆ SetGwAddress()

◆ SetHeaderOffsetVbdc()

◆ SetLogonMsgTxPossibleCallback()

◆ SetNodeInfo()

◆ UpdatePendingRbdcCounters()

◆ UpdatePendingVbdcCounters() [1/2]

◆ UpdatePendingVbdcCounters() [2/2]

Member Data Documentation

◆ m_assignedDaResourcesBytes

◆ m_aVbdcTrace

◆ m_cnoReportEvent

◆ m_cnoReportInterval

◆ m_crTrace

◆ m_crTraceLog

◆ m_ctrlCallback

◆ m_ctrlMsgTxPossibleCallback

◆ m_enableOnDemandEvaluation

◆ m_evaluationInterval

◆ m_forcedAvbdcUpdate

◆ m_gainValueK

◆ m_gwAddress

◆ m_headerOffsetVbcd

◆ m_lastCno

◆ m_lastSatelliteCno

◆ m_lastVbdcCrSent

◆ m_llsConf

◆ m_logonMsgTxPossibleCallback

◆ m_nodeInfo