Class for random access algorithms. More...

#include "satellite-random-access-container.h"

Inheritance diagram for ns3::SatRandomAccess:

Collaboration diagram for ns3::SatRandomAccess:

Classes
struct	RandomAccessTxOpportunities_s
	Random access Tx opportunities. More...

Public Types
typedef Callback< bool >	AreBuffersEmptyCallback
	Typedef of callback for buffer status. More...

typedef Callback< bool >	IsDamaAvailableCallback
	Typedef of callback for known DAMA status. More...

Public Member Functions
	SatRandomAccess ()
	Constructor. More...

	SatRandomAccess (Ptr< SatRandomAccessConf > randomAccessConf, SatEnums::RandomAccessModel_t randomAccessModel)
	Constructor. More...

virtual	~SatRandomAccess ()
	Destructor. More...

bool	CrdsaHasBackoffTimePassed (uint32_t allocationChannel) const
	Function for checking whether the backoff time has passed for this allocation channel. More...

SatRandomAccess::RandomAccessTxOpportunities_s	DoRandomAccess (uint32_t allocationChannel, SatEnums::RandomAccessTriggerType_t triggerType)
	Main function of this module. More...

uint32_t	GetCrdsaSignalingOverheadInBytes ()
	Function for getting the CRDSA signaling overhead in bytes. More...

uint32_t	GetSlottedAlohaSignalingOverheadInBytes ()
	Function for getting the Slotted ALOHA signaling overhead in bytes. More...

void	SetAreBuffersEmptyCallback (SatRandomAccess::AreBuffersEmptyCallback callback)
	Function for setting the AreBuffersEmpty callback. More...

void	SetBackoffProbability (uint32_t allocationChannel, uint16_t backoffProbability)
	Function for setting the backoff probability. More...

void	SetBackoffTime (uint32_t allocationChannel, uint32_t backoffTime)
	Function for setting the backoff time. More...

void	SetCrdsaBackoffProbability (uint32_t allocationChannel, uint16_t backoffProbability)
	Function for setting the backoff probability. More...

void	SetCrdsaBackoffTimeInMilliSeconds (uint32_t allocationChannel, uint32_t backoffTimeInMilliSeconds)
	Function for setting the backoff time in milliseconds. More...

void	SetCrdsaMaximumDataRateLimitationParameters (uint32_t allocationChannel, uint32_t maxUniquePayloadPerBlock, uint32_t maxConsecutiveBlocksAccessed, uint32_t minIdleBlocks)
	Function for setting the maximum rate limitation parameters. More...

void	SetCrdsaRandomizationParameters (uint32_t allocationChannel, uint32_t minRandomizationValue, uint32_t maxRandomizationValue, uint32_t numOfInstances)
	Function for setting the parameters related to CRDSA randomization. More...

void	SetFSimBackoffProbability (uint32_t allocationChannel, uint16_t backoffPersistence)
	Function for setting the backoff probability. More...

void	SetFSimBackoffTimeInFrames (uint32_t allocationChannel, uint32_t backoffTimeInFrames)
	Function for setting the backoff time in frames. More...

void	SetIsDamaAvailableCallback (SatRandomAccess::IsDamaAvailableCallback callback)
	Function for setting the IsDamaAvailable callback. More...

void	SetRandomAccessModel (SatEnums::RandomAccessModel_t randomAccessModel)
	Function for setting the used random access model. More...

void	SetSlottedAlohaControlRandomizationIntervalInMilliSeconds (uint32_t controlRandomizationIntervalInMilliSeconds)
	Function for setting the Slotted ALOHA control randomization interval. More...

Static Public Member Functions
static TypeId	GetTypeId (void)
	NS-3 type id function. More...

Protected Member Functions
void	DoDispose ()
	Function for disposing the module and its variables. More...

Private Member Functions
bool	CrdsaDoBackoff (uint32_t allocationChannel)
	Function for evaluating the backoff for this allocation channel. More...

void	CrdsaIncreaseConsecutiveBlocksUsed (uint32_t allocationChannel)
	Function for increasing the allocation channel specific count of consecutive used blocks. More...

void	CrdsaIncreaseConsecutiveBlocksUsedForAllAllocationChannels ()
	Function for increasing the count of consecutive used blocks for all allocation channels. More...

bool	CrdsaIsAllocationChannelFree (uint32_t allocationChannel)
	Function for checking if the allocation channel is free. More...

SatRandomAccess::RandomAccessTxOpportunities_s	CrdsaPrepareToTransmit (uint32_t allocationChannel)
	Function for evaluating backoff for each unique CRDSA packet and calling the randomization of Tx opportunities if backoff is not triggered. More...

std::pair< std::set< uint32_t >, std::set< uint32_t > >	CrdsaRandomizeTxOpportunities (uint32_t allocationChannel, std::pair< std::set< uint32_t >, std::set< uint32_t >> slots)
	Function for randomizing the CRDSA Tx opportunities (slots) for each unique packet. More...

void	CrdsaReduceIdleBlocks (uint32_t allocationChannel)
	Function for reducing the allocation channel specific number of idle blocks in effect. More...

void	CrdsaReduceIdleBlocksForAllAllocationChannels ()
	Function for reducing the idle blocks in effect for all allocation channels. More...

void	CrdsaResetConsecutiveBlocksUsed (uint32_t allocationChannel)
	Function for resetting the number of consecutive blocks to zero for a specific allocation channel. More...

void	CrdsaResetConsecutiveBlocksUsedForAllAllocationChannels ()
	Function for resetting the number of consecutive blocks to zero for all allocation channels. More...

void	CrdsaSetBackoffTimer (uint32_t allocationChannel)
	Function for setting the allocation channel specific backoff timer. More...

SatRandomAccess::RandomAccessTxOpportunities_s	DoCrdsa (uint32_t allocationChannel)
	Main function for CRDSA algorithm. More...

SatRandomAccess::RandomAccessTxOpportunities_s	DoEssa (uint32_t allocationChannel)
	Main function for ESSA. More...

SatRandomAccess::RandomAccessTxOpportunities_s	DoSlottedAloha ()
	Main function for Slotted ALOHA. More...

uint32_t	GetConfigurationIdForAllocationChannel (uint32_t allocationChannelId)
	Function to convert a carrier allocation channel ID into its allocation channel configuration ID. More...

bool	IsCrdsaAllocationChannel (uint32_t allocationChannel)
	Function for checking if the allocation channel is CRDSA allocation channel. More...

bool	IsEssaAllocationChannel (uint32_t allocationChannel)
	Function for checking if the allocation channel is ESSA allocation channel. More...

bool	IsSlottedAlohaAllocationChannel (uint32_t allocationChannel)
	Function for checking if the allocation channel is Slotted ALOHA allocation channel. More...

void	PrintVariables ()
	Function for printing out various module variables to console. More...

void	SlottedAlohaDoVariableSanityCheck ()
	Function for checking the sanity of Slotted ALOHA related variables. More...

uint32_t	SlottedAlohaRandomizeReleaseTime ()
	Function for performing the Slotted ALOHA release time randomization, i.e., the time after which the next available slot is selected for Tx opportunity. More...

Private Attributes
AreBuffersEmptyCallback	m_areBuffersEmptyCb
	Callback for buffer status. More...

bool	m_crdsaNewData
	A flag defining whether the buffers were emptied the last time RA was evaluated, i.e., is the data now new. More...

IsDamaAvailableCallback	m_isDamaAvailableCb
	Callback for known DAMA status. More...

uint32_t	m_numOfAllocationChannels
	Number of allocation channels available. More...

Ptr< SatRandomAccessConf >	m_randomAccessConf
	A pointer to random access configuration. More...

SatEnums::RandomAccessModel_t	m_randomAccessModel
	The used random access model. More...

Ptr< UniformRandomVariable >	m_uniformRandomVariable
	Uniform random variable object. More...

Detailed Description

Class for random access algorithms.

The purpose of this class is to implement Slotted ALOHA and CRDSA algorithms for randomizing the Tx opportunities. In Slotted ALOHAs case this means randomizing the wait time after which the next slot is selected for transmission. In CRDSAs case this means randomizing the slots within a frame for each unique packet and it's replicas.

Definition at line 51 of file satellite-random-access-container.h.

Member Typedef Documentation

◆ AreBuffersEmptyCallback

typedef Callback<bool> ns3::SatRandomAccess::AreBuffersEmptyCallback

Typedef of callback for buffer status.

Returns: Is there data left in the buffers

Definition at line 64 of file satellite-random-access-container.h.

◆ IsDamaAvailableCallback

typedef Callback<bool> ns3::SatRandomAccess::IsDamaAvailableCallback

Typedef of callback for known DAMA status.

Returns: Is there known DAMA allocations

Definition at line 58 of file satellite-random-access-container.h.

Constructor & Destructor Documentation

◆ SatRandomAccess() [1/2]

ns3::SatRandomAccess::SatRandomAccess ( )

Constructor.

Definition at line 46 of file satellite-random-access-container.cc.

◆ SatRandomAccess() [2/2]

ns3::SatRandomAccess::SatRandomAccess	(	Ptr< SatRandomAccessConf >	randomAccessConf,
		SatEnums::RandomAccessModel_t	randomAccessModel
	)

Constructor.

Definition at line 60 of file satellite-random-access-container.cc.

References m_randomAccessConf, m_uniformRandomVariable, and SetRandomAccessModel().

Here is the call graph for this function:

◆ ~SatRandomAccess()

ns3::SatRandomAccess::~SatRandomAccess ( )

virtual

Destructor.

Definition at line 82 of file satellite-random-access-container.cc.

References m_areBuffersEmptyCb, m_isDamaAvailableCb, m_randomAccessConf, and m_uniformRandomVariable.

Member Function Documentation

◆ CrdsaDoBackoff()

bool ns3::SatRandomAccess::CrdsaDoBackoff ( uint32_t allocationChannel )

private

Function for evaluating the backoff for this allocation channel.

Parameters

allocationChannel allocation channel

Returns: Was backoff performed or not

Definition at line 816 of file satellite-random-access-container.cc.

References m_randomAccessConf, and m_uniformRandomVariable.

Referenced by CrdsaPrepareToTransmit(), and DoCrdsa().

Here is the caller graph for this function:

◆ CrdsaHasBackoffTimePassed()

bool ns3::SatRandomAccess::CrdsaHasBackoffTimePassed ( uint32_t allocationChannel ) const

Function for checking whether the backoff time has passed for this allocation channel.

Parameters

allocationChannel allocation channel

Returns: Has backoff time passed

Definition at line 734 of file satellite-random-access-container.cc.

References m_randomAccessConf.

Referenced by DoRandomAccess().

Here is the caller graph for this function:

◆ CrdsaIncreaseConsecutiveBlocksUsed()

void ns3::SatRandomAccess::CrdsaIncreaseConsecutiveBlocksUsed ( uint32_t allocationChannel )

private

Function for increasing the allocation channel specific count of consecutive used blocks.

If the maximum number of consecutive blocks is reached, this function triggers the call of idle period.

Parameters

allocationChannel allocation channel

Definition at line 905 of file satellite-random-access-container.cc.

References CrdsaResetConsecutiveBlocksUsedForAllAllocationChannels(), and m_randomAccessConf.

Referenced by CrdsaIncreaseConsecutiveBlocksUsedForAllAllocationChannels().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ CrdsaIncreaseConsecutiveBlocksUsedForAllAllocationChannels()

void ns3::SatRandomAccess::CrdsaIncreaseConsecutiveBlocksUsedForAllAllocationChannels ( )

private

Function for increasing the count of consecutive used blocks for all allocation channels.

Definition at line 934 of file satellite-random-access-container.cc.

References CrdsaIncreaseConsecutiveBlocksUsed(), and m_numOfAllocationChannels.

Referenced by DoCrdsa().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ CrdsaIsAllocationChannelFree()

bool ns3::SatRandomAccess::CrdsaIsAllocationChannelFree ( uint32_t allocationChannel )

private

Function for checking if the allocation channel is free.

Parameters

allocationChannel allocation channel

Returns: Is the allocation channel free

Definition at line 801 of file satellite-random-access-container.cc.

References m_randomAccessConf.

Referenced by CrdsaPrepareToTransmit().

Here is the caller graph for this function:

◆ CrdsaPrepareToTransmit()

SatRandomAccess::RandomAccessTxOpportunities_s ns3::SatRandomAccess::CrdsaPrepareToTransmit ( uint32_t allocationChannel )

private

Function for evaluating backoff for each unique CRDSA packet and calling the randomization of Tx opportunities if backoff is not triggered.

Parameters

allocationChannel allocation channel

Returns: Tx opportunities for all unique packets

TODO when multiple overlapping allocation channels for a single UT needs to be supported slots.first can be updated to take into account the reserved RA slots from MAC. For this the logic for determining the reserved slots needs to be implemented in UT MAC and the slots should be passed as parameter to RA logic and used instead of slots.first

This should be done by including the list of used slots in this SF as a parameter for the random access algorithm call. This functionality is needed with, e.g., multiple allocation channels

randomize instance slots for this unique packet

save the packet specific Tx opportunities into a vector

save the rest of the CRDSA Tx opportunity results

Definition at line 846 of file satellite-random-access-container.cc.

References CrdsaDoBackoff(), CrdsaIsAllocationChannelFree(), CrdsaRandomizeTxOpportunities(), CrdsaSetBackoffTimer(), ns3::SatRandomAccess::RandomAccessTxOpportunities_s::crdsaTxOpportunities, m_areBuffersEmptyCb, m_crdsaNewData, m_randomAccessConf, ns3::SatEnums::RA_TX_OPPORTUNITY_CRDSA, ns3::SatEnums::RA_TX_OPPORTUNITY_DO_NOTHING, and ns3::SatRandomAccess::RandomAccessTxOpportunities_s::txOpportunityType.

Referenced by DoCrdsa().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ CrdsaRandomizeTxOpportunities()

std::pair< std::set< uint32_t >, std::set< uint32_t > > ns3::SatRandomAccess::CrdsaRandomizeTxOpportunities	(	uint32_t	allocationChannel,
		std::pair< std::set< uint32_t >, std::set< uint32_t >>	slots
	)

private

Function for randomizing the CRDSA Tx opportunities (slots) for each unique packet.

Parameters

allocationChannel	allocation channel
slots	a set of reserved slots

Returns: a set of reserved slots updated with the results of the latest randomization

Definition at line 1034 of file satellite-random-access-container.cc.

References m_randomAccessConf, and m_uniformRandomVariable.

Referenced by CrdsaPrepareToTransmit().

Here is the caller graph for this function:

◆ CrdsaReduceIdleBlocks()

void ns3::SatRandomAccess::CrdsaReduceIdleBlocks ( uint32_t allocationChannel )

private

Function for reducing the allocation channel specific number of idle blocks in effect.

Parameters

allocationChannel allocation channel

Definition at line 753 of file satellite-random-access-container.cc.

References m_randomAccessConf.

Referenced by CrdsaReduceIdleBlocksForAllAllocationChannels().

Here is the caller graph for this function:

◆ CrdsaReduceIdleBlocksForAllAllocationChannels()

void ns3::SatRandomAccess::CrdsaReduceIdleBlocksForAllAllocationChannels ( )

private

Function for reducing the idle blocks in effect for all allocation channels.

Definition at line 770 of file satellite-random-access-container.cc.

References CrdsaReduceIdleBlocks(), and m_numOfAllocationChannels.

Referenced by DoCrdsa(), and DoRandomAccess().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ CrdsaResetConsecutiveBlocksUsed()

void ns3::SatRandomAccess::CrdsaResetConsecutiveBlocksUsed ( uint32_t allocationChannel )

private

Function for resetting the number of consecutive blocks to zero for a specific allocation channel.

Parameters

allocationChannel allocation channel

Definition at line 781 of file satellite-random-access-container.cc.

References m_randomAccessConf.

Referenced by CrdsaResetConsecutiveBlocksUsedForAllAllocationChannels().

Here is the caller graph for this function:

◆ CrdsaResetConsecutiveBlocksUsedForAllAllocationChannels()

void ns3::SatRandomAccess::CrdsaResetConsecutiveBlocksUsedForAllAllocationChannels ( )

private

Function for resetting the number of consecutive blocks to zero for all allocation channels.

Definition at line 790 of file satellite-random-access-container.cc.

References CrdsaResetConsecutiveBlocksUsed(), and m_numOfAllocationChannels.

Referenced by CrdsaIncreaseConsecutiveBlocksUsed(), DoCrdsa(), and DoRandomAccess().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ CrdsaSetBackoffTimer()

void ns3::SatRandomAccess::CrdsaSetBackoffTimer ( uint32_t allocationChannel )

private

Function for setting the allocation channel specific backoff timer.

Parameters

allocationChannel allocation channel

Definition at line 835 of file satellite-random-access-container.cc.

References m_randomAccessConf.

Referenced by CrdsaPrepareToTransmit(), and DoCrdsa().

Here is the caller graph for this function:

◆ DoCrdsa()

SatRandomAccess::RandomAccessTxOpportunities_s ns3::SatRandomAccess::DoCrdsa ( uint32_t allocationChannel )

private

Main function for CRDSA algorithm.

Parameters

allocationChannel allocation channel

Returns: CRDSA algorithm results (Tx opportunities)

Definition at line 945 of file satellite-random-access-container.cc.

References CrdsaDoBackoff(), CrdsaIncreaseConsecutiveBlocksUsedForAllAllocationChannels(), CrdsaPrepareToTransmit(), CrdsaReduceIdleBlocksForAllAllocationChannels(), CrdsaResetConsecutiveBlocksUsedForAllAllocationChannels(), CrdsaSetBackoffTimer(), ns3::SatEnums::GetRandomAccessOpportunityTypeName(), m_areBuffersEmptyCb, m_crdsaNewData, m_isDamaAvailableCb, PrintVariables(), ns3::SatEnums::RA_TX_OPPORTUNITY_CRDSA, ns3::SatEnums::RA_TX_OPPORTUNITY_DO_NOTHING, and ns3::SatRandomAccess::RandomAccessTxOpportunities_s::txOpportunityType.

Referenced by DoRandomAccess().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ DoDispose()

void ns3::SatRandomAccess::DoDispose ( void )

protected

Function for disposing the module and its variables.

Definition at line 101 of file satellite-random-access-container.cc.

References m_areBuffersEmptyCb, m_isDamaAvailableCb, m_randomAccessConf, and m_uniformRandomVariable.

◆ DoEssa()

SatRandomAccess::RandomAccessTxOpportunities_s ns3::SatRandomAccess::DoEssa ( uint32_t allocationChannel )

private

Main function for ESSA.

Parameters

allocationChannel allocation channel

Returns: ESSA algorithm results (Tx opportunity)

TODO: take into account inter-packet time ?

Calculate how many backoff slots must wait TODO: this should be done in a semi-periodic way: each time a backoff time has passed, check if we can send or not (the back-off time and probability may have changed in between).

Definition at line 582 of file satellite-random-access-container.cc.

References m_randomAccessConf, m_uniformRandomVariable, ns3::SatEnums::RA_TX_OPPORTUNITY_ESSA, ns3::SatRandomAccess::RandomAccessTxOpportunities_s::slottedAlohaTxOpportunity, and ns3::SatRandomAccess::RandomAccessTxOpportunities_s::txOpportunityType.

Referenced by DoRandomAccess().

Here is the caller graph for this function:

◆ DoRandomAccess()

SatRandomAccess::RandomAccessTxOpportunities_s ns3::SatRandomAccess::DoRandomAccess	(	uint32_t	allocationChannel,
		SatEnums::RandomAccessTriggerType_t	triggerType
	)

Main function of this module.

This will be called from outside and it is responsible for selecting the appropriate RA algorithm

Parameters

allocationChannel	allocation channel
triggerType	RA trigger type

Returns: RA algorithm results (Tx opportunities)

return variable initialization

Do CRDSA (MARSALA being a special form of CRDSA)

Do ESSA

Do Slotted ALOHA

If all RA based on RCS2 specification is enabled, CRDSA is used if the RA parameter number of instances is set >= 2. Otherwise SA is used.

For logging/debugging purposes TODO: This if statement is utilized only for logging, and thus could be optimized to be enabled only with debug build.

Definition at line 159 of file satellite-random-access-container.cc.

Here is the call graph for this function:

◆ DoSlottedAloha()

SatRandomAccess::RandomAccessTxOpportunities_s ns3::SatRandomAccess::DoSlottedAloha ( )

private

Main function for Slotted ALOHA.

Returns: Slotted ALOHA algorithm results (Tx opportunity)

Check if we have known DAMA allocations

Randomize Tx opportunity release time

Definition at line 487 of file satellite-random-access-container.cc.

References m_isDamaAvailableCb, m_randomAccessConf, ns3::SatEnums::RA_TX_OPPORTUNITY_DO_NOTHING, ns3::SatEnums::RA_TX_OPPORTUNITY_SLOTTED_ALOHA, SlottedAlohaRandomizeReleaseTime(), ns3::SatRandomAccess::RandomAccessTxOpportunities_s::slottedAlohaTxOpportunity, and ns3::SatRandomAccess::RandomAccessTxOpportunities_s::txOpportunityType.

Referenced by DoRandomAccess().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ GetConfigurationIdForAllocationChannel()

uint32_t ns3::SatRandomAccess::GetConfigurationIdForAllocationChannel ( uint32_t allocationChannelId )

private

Function to convert a carrier allocation channel ID into its allocation channel configuration ID.

Parameters

allocationChannelId The carrier allocation channel ID

Returns: The carrier allocation channel configuration ID

Definition at line 401 of file satellite-random-access-container.cc.

References m_randomAccessConf.

Referenced by DoRandomAccess().

Here is the caller graph for this function:

◆ GetCrdsaSignalingOverheadInBytes()

uint32_t ns3::SatRandomAccess::GetCrdsaSignalingOverheadInBytes ( )

Function for getting the CRDSA signaling overhead in bytes.

Returns: CRDSA signaling overhead in bytes

Definition at line 726 of file satellite-random-access-container.cc.

References m_randomAccessConf.

◆ GetSlottedAlohaSignalingOverheadInBytes()

uint32_t ns3::SatRandomAccess::GetSlottedAlohaSignalingOverheadInBytes ( )

Function for getting the Slotted ALOHA signaling overhead in bytes.

Returns: Slotted ALOHA signaling overhead in bytes

Slotted ALOHA related methods

Definition at line 457 of file satellite-random-access-container.cc.

References m_randomAccessConf.

◆ GetTypeId()

TypeId ns3::SatRandomAccess::GetTypeId ( void )

static

NS-3 type id function.

Returns: type id

Definition at line 39 of file satellite-random-access-container.cc.

◆ IsCrdsaAllocationChannel()

bool ns3::SatRandomAccess::IsCrdsaAllocationChannel ( uint32_t allocationChannel )

private

Function for checking if the allocation channel is CRDSA allocation channel.

Parameters

allocationChannel allocation channel

Returns: Is CRDSA allocation channel

Definition at line 132 of file satellite-random-access-container.cc.

References m_randomAccessConf.

Referenced by DoRandomAccess().

Here is the caller graph for this function:

◆ IsEssaAllocationChannel()

bool ns3::SatRandomAccess::IsEssaAllocationChannel ( uint32_t allocationChannel )

private

Function for checking if the allocation channel is ESSA allocation channel.

Parameters

allocationChannel allocation channel

Returns: Is ESSA allocation channel

Definition at line 150 of file satellite-random-access-container.cc.

References m_randomAccessConf.

Referenced by DoRandomAccess().

Here is the caller graph for this function:

◆ IsSlottedAlohaAllocationChannel()

bool ns3::SatRandomAccess::IsSlottedAlohaAllocationChannel ( uint32_t allocationChannel )

private

Function for checking if the allocation channel is Slotted ALOHA allocation channel.

Parameters

allocationChannel allocation channel

Returns: Is Slotted ALOHA allocation channel

Definition at line 141 of file satellite-random-access-container.cc.

References m_randomAccessConf.

Referenced by DoRandomAccess().

Here is the caller graph for this function:

◆ PrintVariables()

void ns3::SatRandomAccess::PrintVariables ( )

private

Function for printing out various module variables to console.

Definition at line 361 of file satellite-random-access-container.cc.

References m_crdsaNewData, m_numOfAllocationChannels, and m_randomAccessConf.

Referenced by DoCrdsa().

Here is the caller graph for this function:

◆ SetAreBuffersEmptyCallback()

void ns3::SatRandomAccess::SetAreBuffersEmptyCallback ( SatRandomAccess::AreBuffersEmptyCallback callback )

Function for setting the AreBuffersEmpty callback.

Parameters

callback callback

Definition at line 1093 of file satellite-random-access-container.cc.

References m_areBuffersEmptyCb.

◆ SetBackoffProbability()

void ns3::SatRandomAccess::SetBackoffProbability	(	uint32_t	allocationChannel,
		uint16_t	backoffProbability
	)

Function for setting the backoff probability.

Parameters

allocationChannel	allocation channel
backoffProbability	backoff probability

Definition at line 430 of file satellite-random-access-container.cc.

References m_randomAccessModel, ns3::SatEnums::RA_MODEL_CRDSA, ns3::SatEnums::RA_MODEL_ESSA, ns3::SatEnums::RA_MODEL_RCS2_SPECIFICATION, SetCrdsaBackoffProbability(), and SetFSimBackoffProbability().

Here is the call graph for this function:

◆ SetBackoffTime()

void ns3::SatRandomAccess::SetBackoffTime	(	uint32_t	allocationChannel,
		uint32_t	backoffTime
	)

Function for setting the backoff time.

Parameters

allocationChannel	allocation channel
backoffTime	backoff time

Definition at line 407 of file satellite-random-access-container.cc.

References m_randomAccessModel, ns3::SatEnums::RA_MODEL_CRDSA, ns3::SatEnums::RA_MODEL_ESSA, ns3::SatEnums::RA_MODEL_RCS2_SPECIFICATION, SetCrdsaBackoffTimeInMilliSeconds(), and SetFSimBackoffTimeInFrames().

Here is the call graph for this function:

◆ SetCrdsaBackoffProbability()

void ns3::SatRandomAccess::SetCrdsaBackoffProbability	(	uint32_t	allocationChannel,
		uint16_t	backoffProbability
	)

Function for setting the backoff probability.

Parameters

allocationChannel	allocation channel
backoffProbability	backoff probability

Definition at line 646 of file satellite-random-access-container.cc.

References m_randomAccessConf, m_randomAccessModel, ns3::SatEnums::RA_MODEL_CRDSA, ns3::SatEnums::RA_MODEL_MARSALA, and ns3::SatEnums::RA_MODEL_RCS2_SPECIFICATION.

Referenced by SetBackoffProbability().

Here is the caller graph for this function:

◆ SetCrdsaBackoffTimeInMilliSeconds()

void ns3::SatRandomAccess::SetCrdsaBackoffTimeInMilliSeconds	(	uint32_t	allocationChannel,
		uint32_t	backoffTimeInMilliSeconds
	)

Function for setting the backoff time in milliseconds.

Parameters

allocationChannel	allocation channel
backoffTimeInMilliSeconds	backoff time

CRDSA related methods

Definition at line 623 of file satellite-random-access-container.cc.

References m_randomAccessConf, m_randomAccessModel, ns3::SatEnums::RA_MODEL_CRDSA, ns3::SatEnums::RA_MODEL_MARSALA, and ns3::SatEnums::RA_MODEL_RCS2_SPECIFICATION.

Referenced by SetBackoffTime().

Here is the caller graph for this function:

◆ SetCrdsaMaximumDataRateLimitationParameters()

void ns3::SatRandomAccess::SetCrdsaMaximumDataRateLimitationParameters	(	uint32_t	allocationChannel,
		uint32_t	maxUniquePayloadPerBlock,
		uint32_t	maxConsecutiveBlocksAccessed,
		uint32_t	minIdleBlocks
	)

Function for setting the maximum rate limitation parameters.

Parameters

allocationChannel	allocation channel
maxUniquePayloadPerBlock	maximum number of unique payloads per block
maxConsecutiveBlocksAccessed	maximum number of consecutive blocks accessed
minIdleBlocks	minimum number of idle blocks

Definition at line 697 of file satellite-random-access-container.cc.

References m_randomAccessConf, m_randomAccessModel, ns3::SatEnums::RA_MODEL_CRDSA, ns3::SatEnums::RA_MODEL_MARSALA, and ns3::SatEnums::RA_MODEL_RCS2_SPECIFICATION.

◆ SetCrdsaRandomizationParameters()

void ns3::SatRandomAccess::SetCrdsaRandomizationParameters	(	uint32_t	allocationChannel,
		uint32_t	minRandomizationValue,
		uint32_t	maxRandomizationValue,
		uint32_t	numOfInstances
	)

Function for setting the parameters related to CRDSA randomization.

Parameters

allocationChannel	allocation channel
minRandomizationValue	minimum randomization value
maxRandomizationValue	maximum randomization value
numOfInstances	number of packet instances (packet replicas)

Definition at line 668 of file satellite-random-access-container.cc.

References m_randomAccessConf, m_randomAccessModel, ns3::SatEnums::RA_MODEL_CRDSA, ns3::SatEnums::RA_MODEL_MARSALA, and ns3::SatEnums::RA_MODEL_RCS2_SPECIFICATION.

◆ SetFSimBackoffProbability()

void ns3::SatRandomAccess::SetFSimBackoffProbability	(	uint32_t	allocationChannel,
		uint16_t	backoffPersistence
	)

Function for setting the backoff probability.

Parameters

allocationChannel	allocation channel
backoffPersistence	backoff persistence

NOTE: this could be done with the same functions for Crdsa (SetCrdsaBackOffProbabaility) but changing the name of the function. The NCC should then send the backoff probability and not the persistence.

Definition at line 562 of file satellite-random-access-container.cc.

References m_randomAccessConf, m_randomAccessModel, and ns3::SatEnums::RA_MODEL_ESSA.

Referenced by SetBackoffProbability().

Here is the caller graph for this function:

◆ SetFSimBackoffTimeInFrames()

void ns3::SatRandomAccess::SetFSimBackoffTimeInFrames	(	uint32_t	allocationChannel,
		uint32_t	backoffTimeInFrames
	)

Function for setting the backoff time in frames.

Parameters

allocationChannel	allocation channel
backoffTimeInFrames	backoff time

ESSA related methods

NOTE: this could be done with the same functions for Crdsa (SetCrdsaBackOffTime) but changing the name of the function. The NCC should then send the backofftime in ms, and not in frames.

Definition at line 541 of file satellite-random-access-container.cc.

References m_randomAccessConf, m_randomAccessModel, and ns3::SatEnums::RA_MODEL_ESSA.

Referenced by SetBackoffTime().

Here is the caller graph for this function:

◆ SetIsDamaAvailableCallback()

void ns3::SatRandomAccess::SetIsDamaAvailableCallback ( SatRandomAccess::IsDamaAvailableCallback callback )

Function for setting the IsDamaAvailable callback.

Parameters

callback callback

Definition at line 1085 of file satellite-random-access-container.cc.

References m_isDamaAvailableCb.

◆ SetRandomAccessModel()

void ns3::SatRandomAccess::SetRandomAccessModel ( SatEnums::RandomAccessModel_t randomAccessModel )

Function for setting the used random access model.

Parameters

randomAccessModel random access model

General random access related methods

Definition at line 124 of file satellite-random-access-container.cc.

References ns3::SatEnums::GetRandomAccessModelName(), and m_randomAccessModel.

Referenced by SatRandomAccess().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ SetSlottedAlohaControlRandomizationIntervalInMilliSeconds()

void ns3::SatRandomAccess::SetSlottedAlohaControlRandomizationIntervalInMilliSeconds ( uint32_t controlRandomizationIntervalInMilliSeconds )

Function for setting the Slotted ALOHA control randomization interval.

Parameters

controlRandomizationIntervalInMilliSeconds Control randomization interval in milliseconds

Definition at line 463 of file satellite-random-access-container.cc.

References m_randomAccessConf, m_randomAccessModel, ns3::SatEnums::RA_MODEL_RCS2_SPECIFICATION, and ns3::SatEnums::RA_MODEL_SLOTTED_ALOHA.

◆ SlottedAlohaDoVariableSanityCheck()

void ns3::SatRandomAccess::SlottedAlohaDoVariableSanityCheck ( )

private

Function for checking the sanity of Slotted ALOHA related variables.

◆ SlottedAlohaRandomizeReleaseTime()

uint32_t ns3::SatRandomAccess::SlottedAlohaRandomizeReleaseTime ( )

private

Function for performing the Slotted ALOHA release time randomization, i.e., the time after which the next available slot is selected for Tx opportunity.

Control randomization interval defines the maximum release time.

Returns: randomized time

Definition at line 522 of file satellite-random-access-container.cc.

References m_randomAccessConf, and m_uniformRandomVariable.

Referenced by DoSlottedAloha().

Here is the caller graph for this function:

Member Data Documentation

◆ m_areBuffersEmptyCb

AreBuffersEmptyCallback ns3::SatRandomAccess::m_areBuffersEmptyCb

private

Callback for buffer status.

Definition at line 406 of file satellite-random-access-container.h.

Referenced by ~SatRandomAccess(), CrdsaPrepareToTransmit(), DoCrdsa(), DoDispose(), and SetAreBuffersEmptyCallback().

◆ m_crdsaNewData

bool ns3::SatRandomAccess::m_crdsaNewData

private

A flag defining whether the buffers were emptied the last time RA was evaluated, i.e., is the data now new.

Definition at line 396 of file satellite-random-access-container.h.

Referenced by CrdsaPrepareToTransmit(), DoCrdsa(), and PrintVariables().

◆ m_isDamaAvailableCb

IsDamaAvailableCallback ns3::SatRandomAccess::m_isDamaAvailableCb

private

Callback for known DAMA status.

Definition at line 401 of file satellite-random-access-container.h.

Referenced by ~SatRandomAccess(), DoCrdsa(), DoDispose(), DoSlottedAloha(), and SetIsDamaAvailableCallback().

◆ m_numOfAllocationChannels

uint32_t ns3::SatRandomAccess::m_numOfAllocationChannels

private

Number of allocation channels available.

Definition at line 390 of file satellite-random-access-container.h.

Referenced by CrdsaIncreaseConsecutiveBlocksUsedForAllAllocationChannels(), CrdsaReduceIdleBlocksForAllAllocationChannels(), CrdsaResetConsecutiveBlocksUsedForAllAllocationChannels(), and PrintVariables().

◆ m_randomAccessConf

Ptr<SatRandomAccessConf> ns3::SatRandomAccess::m_randomAccessConf

private

A pointer to random access configuration.

Definition at line 385 of file satellite-random-access-container.h.

Referenced by SatRandomAccess(), ~SatRandomAccess(), CrdsaDoBackoff(), CrdsaHasBackoffTimePassed(), CrdsaIncreaseConsecutiveBlocksUsed(), CrdsaIsAllocationChannelFree(), CrdsaPrepareToTransmit(), CrdsaRandomizeTxOpportunities(), CrdsaReduceIdleBlocks(), CrdsaResetConsecutiveBlocksUsed(), CrdsaSetBackoffTimer(), DoDispose(), DoEssa(), DoRandomAccess(), DoSlottedAloha(), GetConfigurationIdForAllocationChannel(), GetCrdsaSignalingOverheadInBytes(), GetSlottedAlohaSignalingOverheadInBytes(), IsCrdsaAllocationChannel(), IsEssaAllocationChannel(), IsSlottedAlohaAllocationChannel(), PrintVariables(), SetCrdsaBackoffProbability(), SetCrdsaBackoffTimeInMilliSeconds(), SetCrdsaMaximumDataRateLimitationParameters(), SetCrdsaRandomizationParameters(), SetFSimBackoffProbability(), SetFSimBackoffTimeInFrames(), SetSlottedAlohaControlRandomizationIntervalInMilliSeconds(), and SlottedAlohaRandomizeReleaseTime().

◆ m_randomAccessModel

SatEnums::RandomAccessModel_t ns3::SatRandomAccess::m_randomAccessModel

private

The used random access model.

Definition at line 380 of file satellite-random-access-container.h.

Referenced by DoRandomAccess(), SetBackoffProbability(), SetBackoffTime(), SetCrdsaBackoffProbability(), SetCrdsaBackoffTimeInMilliSeconds(), SetCrdsaMaximumDataRateLimitationParameters(), SetCrdsaRandomizationParameters(), SetFSimBackoffProbability(), SetFSimBackoffTimeInFrames(), SetRandomAccessModel(), and SetSlottedAlohaControlRandomizationIntervalInMilliSeconds().

◆ m_uniformRandomVariable

Ptr<UniformRandomVariable> ns3::SatRandomAccess::m_uniformRandomVariable

private

Uniform random variable object.

Definition at line 375 of file satellite-random-access-container.h.

Referenced by SatRandomAccess(), ~SatRandomAccess(), CrdsaDoBackoff(), CrdsaRandomizeTxOpportunities(), DoDispose(), DoEssa(), and SlottedAlohaRandomizeReleaseTime().

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

/builds/sns3/satellite/satellite/model/satellite-random-access-container.h
/builds/sns3/satellite/satellite/model/satellite-random-access-container.cc

Classes

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ AreBuffersEmptyCallback

◆ IsDamaAvailableCallback

Constructor & Destructor Documentation

◆ SatRandomAccess() [1/2]

◆ SatRandomAccess() [2/2]

◆ ~SatRandomAccess()

Member Function Documentation

◆ CrdsaDoBackoff()

◆ CrdsaHasBackoffTimePassed()

◆ CrdsaIncreaseConsecutiveBlocksUsed()

◆ CrdsaIncreaseConsecutiveBlocksUsedForAllAllocationChannels()

◆ CrdsaIsAllocationChannelFree()

◆ CrdsaPrepareToTransmit()

◆ CrdsaRandomizeTxOpportunities()

◆ CrdsaReduceIdleBlocks()

◆ CrdsaReduceIdleBlocksForAllAllocationChannels()

◆ CrdsaResetConsecutiveBlocksUsed()

◆ CrdsaResetConsecutiveBlocksUsedForAllAllocationChannels()

◆ CrdsaSetBackoffTimer()

◆ DoCrdsa()

◆ DoDispose()

◆ DoEssa()

◆ DoRandomAccess()

◆ DoSlottedAloha()

◆ GetConfigurationIdForAllocationChannel()

◆ GetCrdsaSignalingOverheadInBytes()

◆ GetSlottedAlohaSignalingOverheadInBytes()

Slotted ALOHA related methods

◆ GetTypeId()

◆ IsCrdsaAllocationChannel()

◆ IsEssaAllocationChannel()

◆ IsSlottedAlohaAllocationChannel()

◆ PrintVariables()

◆ SetAreBuffersEmptyCallback()

◆ SetBackoffProbability()

◆ SetBackoffTime()

◆ SetCrdsaBackoffProbability()

◆ SetCrdsaBackoffTimeInMilliSeconds()

CRDSA related methods

◆ SetCrdsaMaximumDataRateLimitationParameters()

◆ SetCrdsaRandomizationParameters()

◆ SetFSimBackoffProbability()

◆ SetFSimBackoffTimeInFrames()

ESSA related methods

◆ SetIsDamaAvailableCallback()

◆ SetRandomAccessModel()

General random access related methods

◆ SetSlottedAlohaControlRandomizationIntervalInMilliSeconds()

◆ SlottedAlohaDoVariableSanityCheck()

◆ SlottedAlohaRandomizeReleaseTime()

Member Data Documentation

◆ m_areBuffersEmptyCb

◆ m_crdsaNewData

◆ m_isDamaAvailableCb

◆ m_numOfAllocationChannels

◆ m_randomAccessConf

◆ m_randomAccessModel

◆ m_uniformRandomVariable