avrora.sim.radio
Class SimpleAir

java.lang.Object
  avrora.sim.radio.SimpleAir

All Implemented Interfaces:

RadioAir

public class SimpleAir

extends java.lang.Object

implements RadioAir

Very simple implementation of radio air. It assumes a lossless environment where all radios are able to communicate with each other. This simple air is blind to the frequencies used in transmission (i.e. it assumes that all frequencies are really the same).

This class should provide the proper scheduling policy with respect to threads that more complicated radio implementations can use the time scheduling policy and only overload the delivery policy.

Nested Class Summary

protected class	SimpleAir.DeliveryMeet
protected class	SimpleAir.RadioClock An extended version of GlobalClock that implements a version of LocalMeet that is appropriate for delivering radio packets.
protected class	SimpleAir.RadioTicker The RadioTicker class is the global timer for the radio.

Field Summary

static int	bitPeriod
static int	bitPeriod2
long	bitsDiscarded
static int	bytePeriod The amount of cycles it takes for one byte to be sent.
long	bytesAttempted
long	bytesCorrupted
long	bytesDelivered
protected Radio.RadioPacket	firstPacket
long	firstPacketTime
protected java.util.LinkedList	packetsLeftOver
protected java.util.LinkedList	packetsThisPeriod
protected SimpleAir.RadioClock	radioClock GlobalClock used by the air environment.
protected java.util.HashSet	radios
static int	sampleTime
static SimpleAir	simpleAir
protected boolean	utilization

Constructor Summary

SimpleAir()

Method Summary

void	addRadio(Radio r) Add a radio to the environment.
void	recordUtilization(boolean v)
void	removeRadio(Radio r) Remove a radio from the environment.
int	sampleRSSI(Radio r)
void	transmit(Radio r, Radio.RadioPacket f) Transmits frame f into the radio environment.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

simpleAir

public static final SimpleAir simpleAir

radioClock

protected final SimpleAir.RadioClock radioClock

GlobalClock used by the air environment. Essential for synchronization.

firstPacket

protected Radio.RadioPacket firstPacket

packetsThisPeriod

protected java.util.LinkedList packetsThisPeriod

packetsLeftOver

protected java.util.LinkedList packetsLeftOver

radios

protected final java.util.HashSet radios

utilization

protected boolean utilization

firstPacketTime

public long firstPacketTime

bytesDelivered

public long bytesDelivered

bytesAttempted

public long bytesAttempted

bitsDiscarded

public long bitsDiscarded

bytesCorrupted

public long bytesCorrupted

bytePeriod

public static final int bytePeriod

The amount of cycles it takes for one byte to be sent.

See Also:

Constant Field Values

bitPeriod

public static final int bitPeriod

See Also:

Constant Field Values

bitPeriod2

public static final int bitPeriod2

See Also:

Constant Field Values

sampleTime

public static final int sampleTime

See Also:

Constant Field Values

Constructor Detail

SimpleAir

public SimpleAir()

Method Detail

recordUtilization

public void recordUtilization(boolean v)

addRadio

public void addRadio(Radio r)

Description copied from interface: RadioAir

Add a radio to the environment.

Specified by:

addRadio in interface RadioAir

removeRadio

public void removeRadio(Radio r)

Description copied from interface: RadioAir

Remove a radio from the environment.

Specified by:

removeRadio in interface RadioAir

transmit

public void transmit(Radio r,
                     Radio.RadioPacket f)

Description copied from interface: RadioAir

Transmits frame f into the radio environment.

Specified by:

transmit in interface RadioAir

sampleRSSI

public int sampleRSSI(Radio r)

Specified by:

sampleRSSI in interface RadioAir