shawn::MacaTransmissionModel Class Reference

A MACA transmission model delays the messages if two packets may interfere at some node. More...

#include <maca_transmission_model.h>

Inheritance diagram for shawn::MacaTransmissionModel:

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Collaboration diagram for shawn::MacaTransmissionModel:

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List of all members.

Public Member Functions
construction, destruction and support for lifecycle
	MacaTransmissionModel ()
	~MacaTransmissionModel ()
virtual void	init () throw ()
virtual void	reset () throw ()
Transmission model implementation
virtual bool	supports_mobility (void) const throw (std::logic_error)
	Mobility is depending on mobility support from the edge model.
virtual void	send_message (MessageInfo &mi) throw ()
	Stores each message in a vector for delivery at the next simulation round start.
virtual void	deliver_messages () throw ()
	Delivers all messages which are in the vector.
Protected Member Functions
void	insert_message (TransmissionModel::MessageInfo &mi) throw ()
	Insert a new-coming message into aired_messages_.
bool	need_delay (maca_msg *new_msg, maca_msg *msg) throw ()
	See if new_msg will interfere with msg.
void	deliver_one_message (maca_msg *msg) throw ()
	Delivers one message.
Protected Attributes
int	received_
	The number of messages received.
double	average_delay_
	The average delay of the packets.
double	jitter_
	The average variation of delay.
int	deliver_num_
	Number of messages delivered so far.
double	last_delay_
	The delay of last message.
std::vector< maca_msg * >	aired_messages_
	The messages that have been sent by the nodes and are waiting for delivery.
Classes
struct	maca_msg
	Message structure used in MACA transmission model. More...
struct	same_round
	Unary function to determine if two messages are of the same simulation round. More...

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Detailed Description

A MACA transmission model delays the messages if two packets may interfere at some node.

The model assumes that a node sends a RTS packet before it sends the message, and a destination node replies a CTS packet. Any other node who hears the RTS or CTS packet cannot sends a message in the same simulation round, so there is no packet loss.

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Constructor & Destructor Documentation

shawn::MacaTransmissionModel::MacaTransmissionModel

(

)

shawn::MacaTransmissionModel::~MacaTransmissionModel

(

)

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Member Function Documentation

virtual void shawn::MacaTransmissionModel::init

(

)

throw () [virtual]

Reimplemented from shawn::TransmissionModel.

virtual void shawn::MacaTransmissionModel::reset

(

)

throw () [virtual]

Reimplemented from shawn::TransmissionModel.

virtual bool shawn::MacaTransmissionModel::supports_mobility

(

void

)

const throw (std::logic_error) [virtual]

Mobility is depending on mobility support from the edge model.

The edge model is used to determine the 1-hop neighbours which will receive the message

Implements shawn::TransmissionModel.

virtual void shawn::MacaTransmissionModel::send_message

(

MessageInfo &

mi

)

throw () [virtual]

Stores each message in a vector for delivery at the next simulation round start.

A new structure of maca_msg will be build and inserted into aired_messages_

Implements shawn::TransmissionModel.

virtual void shawn::MacaTransmissionModel::deliver_messages

(

)

throw () [virtual]

Delivers all messages which are in the vector.

Call deliver_one_message( maca_msg* msg ) for each element in aired_messages_

Implements shawn::TransmissionModel.

void shawn::MacaTransmissionModel::insert_message

(

TransmissionModel::MessageInfo &

mi

)

throw () [protected]

Insert a new-coming message into aired_messages_.

See also:

aired_messages_

bool shawn::MacaTransmissionModel::need_delay	(	maca_msg *	new_msg,
		maca_msg *	msg
	)			throw () [protected]

See if new_msg will interfere with msg.

Returns:

true if new_msg need delay

void shawn::MacaTransmissionModel::deliver_one_message

(

maca_msg *

msg

)

throw () [protected]

Delivers one message.

Deliver a message to all the neighbours of its source node

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Member Data Documentation

int shawn::MacaTransmissionModel::received_ [protected]

The number of messages received.

double shawn::MacaTransmissionModel::average_delay_ [protected]

The average delay of the packets.

double shawn::MacaTransmissionModel::jitter_ [protected]

The average variation of delay.

int shawn::MacaTransmissionModel::deliver_num_ [protected]

Number of messages delivered so far.

double shawn::MacaTransmissionModel::last_delay_ [protected]

The delay of last message.

std::vector<maca_msg*> shawn::MacaTransmissionModel::aired_messages_ [protected]

The messages that have been sent by the nodes and are waiting for delivery.

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

• src/sys/transm_models/maca_transmission_model.h