Package org.onosproject.net

Class OchSignal

java.lang.Object

org.onosproject.net.OchSignal

All Implemented Interfaces:

Lambda

public class OchSignal
extends Object
implements Lambda

Implementation of Lambda representing OCh (Optical Channel) Signal.

See ITU G.709 "Interfaces for the Optical Transport Network (OTN)". ITU G.694.1 "Spectral grids for WDM applications: DWDM frequency grid".

Field Summary

Fields

Modifier and Type	Field	Description
static Set<Integer>	FIXED_GRID_SLOT_GRANULARITIES

Constructor Summary

Constructors

Constructor	Description
OchSignal(GridType gridType, ChannelSpacing channelSpacing, int spacingMultiplier, int slotGranularity)	Creates an instance with the specified arguments.

Method Summary

Modifier and Type	Method	Description
org.onlab.util.Frequency	centralFrequency()	Returns central frequency in MHz.
ChannelSpacing	channelSpacing()	Returns channel spacing.
boolean	equals(Object obj)
GridType	gridType()	Returns grid type.
int	hashCode()
static OchSignal	newDwdmSlot(ChannelSpacing spacing, int index)	Creates an instance of OchSignal representing a fixed DWDM frequency slot.
static OchSignal	newFlexGridSlot(int index)	Creates an instance of OchSignal representing a flex grid frequency slot.
int	slotGranularity()	Returns slot width granularity.
org.onlab.util.Frequency	slotWidth()	Returns slot width.
int	spacingMultiplier()	Returns spacing multiplier.
static OchSignal	toFixedGrid(List<OchSignal> lambdas, ChannelSpacing spacing)	Convert list of lambdas with flex grid 6.25 GHz spacing and 12.5 GHz width into fixed grid OCh signal.
static SortedSet<OchSignal>	toFlexGrid(OchSignal ochSignal)	Convert fixed grid OCh signal to sorted set of flex grid slots with 6.25 GHz spacing and 12.5 GHz slot width.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

FIXED_GRID_SLOT_GRANULARITIES

public static final Set<Integer> FIXED_GRID_SLOT_GRANULARITIES

Constructor Detail

OchSignal

public OchSignal(GridType gridType,
                 ChannelSpacing channelSpacing,
                 int spacingMultiplier,
                 int slotGranularity)

Creates an instance with the specified arguments. It it recommended to use Lambda.ochSignal(GridType, ChannelSpacing, int, int) unless you want to use the concrete type, OchSignal, directly.

Parameters:

gridType - grid type

channelSpacing - channel spacing

spacingMultiplier - channel spacing multiplier

slotGranularity - slot width granularity

Method Detail

newFlexGridSlot

public static OchSignal newFlexGridSlot(int index)

Creates an instance of OchSignal representing a flex grid frequency slot.

Parameters:

index - slot index (relative to "the center frequency" 193.1THz)

Returns:

FlexGrid OchSignal

newDwdmSlot

public static OchSignal newDwdmSlot(ChannelSpacing spacing,
                                    int index)

Creates an instance of OchSignal representing a fixed DWDM frequency slot.

Parameters:

spacing - channel spacing

index - slot index (relative to "the center frequency" 193.1THz)

Returns:

DWDM OchSignal

gridType

public GridType gridType()

Returns grid type.

Returns:

grid type

channelSpacing

public ChannelSpacing channelSpacing()

Returns channel spacing.

Returns:

channel spacing

spacingMultiplier

public int spacingMultiplier()

Returns spacing multiplier.

Returns:

spacing multiplier

slotGranularity

public int slotGranularity()

Returns slot width granularity.

Returns:

slot width granularity

centralFrequency

public org.onlab.util.Frequency centralFrequency()

Returns central frequency in MHz.

Returns:

frequency in MHz

slotWidth

public org.onlab.util.Frequency slotWidth()

Returns slot width.

Returns:

slot width

toFlexGrid

public static SortedSet<OchSignal> toFlexGrid(OchSignal ochSignal)

Convert fixed grid OCh signal to sorted set of flex grid slots with 6.25 GHz spacing and 12.5 GHz slot width.

Parameters:

ochSignal - fixed grid lambda

Returns:

sorted set of flex grid OCh lambdas

toFixedGrid

public static OchSignal toFixedGrid(List<OchSignal> lambdas,
                                    ChannelSpacing spacing)

Convert list of lambdas with flex grid 6.25 GHz spacing and 12.5 GHz width into fixed grid OCh signal.

Parameters:

lambdas - list of flex grid lambdas in sorted order

spacing - desired fixed grid spacing

Returns:

fixed grid lambda

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object