This module implements a simple shortcut to peer radio protocol that completely bypasses the physical medium. This radio module directly sends packets to the other radio module without any physical layer processing in the radio medium. Packets received from the upper layer protocols may be lost. Physical layer overhead is simply simulated by physical header bits, preamble transmission duration and a propagation delay.

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Extends

Name	Type	Description
PhysicalLayerBase	simple module	Module base for different physical layers.

Parameters

Name	Type	Default value	Description
interfaceTableModule	string
bitrate	double
lengthOverhead	int	0b	extra length added to packets
durationOverhead	double	0s	extra transmission duration added to packets
propagationDelay	double	0s	propagation time to all destinations
packetLoss	double	0	packet loss probability

Properties

Name	Value	Description
display	i=block/wrxtx
class	ShortcutRadio

Gates

Name	Direction	Size	Description
upperLayerIn	input
upperLayerOut	output
radioIn	input

Signals

Name	Type	Unit
transmissionStateChanged	long

Direct method calls (observed)

call to	function	info
AckingMac	inet::AckingMac::receiveSignal	transmissionStateChanged
InterfaceTable	inet::InterfaceTable::findInterfaceByNodeInputGateId	findInterfaceByNodeInputGateId

Incoming messages (observed)

gate	msg	kind	ctrl	srcModule	tags
radioIn	Packet	0		ShortcutRadio	InterfaceReq, MacAddressInd, MacAddressReq, PacketProtocolTag, DispatchProtocolInd?, NetworkProtocolInd?, SocketReq?
upperLayerIn	Packet	0		AckingMac	InterfaceReq, MacAddressInd, MacAddressReq, PacketProtocolTag, DispatchProtocolInd?, NetworkProtocolInd?, SocketReq?

Outgoing messages (observed)

gate	msg	kind	ctrl	destModule	tags
upperLayerOut	Packet	0		AckingMac	InterfaceReq, MacAddressInd, MacAddressReq, PacketProtocolTag, DispatchProtocolInd?, NetworkProtocolInd?, SocketReq?

Packet operations (observed)

chunkType	packetAction
ShortcutPhyHeader	insertAtFront, popAtFront

Shared Tagging operations (observed)

tagType	tagAction
MacAddressReq	getTag
PacketProtocolTag	getTagForUpdate

Source code

//
// This module implements a simple shortcut to peer radio protocol that completely
// bypasses the physical medium. This radio module directly sends packets to the
// other radio module without any physical layer processing in the radio medium.
// Packets received from the upper layer protocols may be lost. Physical layer
// overhead is simply simulated by physical header bits, preamble transmission
// duration and a propagation delay.
//
simple ShortcutRadio extends PhysicalLayerBase like IRadio
{
    parameters:
        string interfaceTableModule;
        double bitrate @unit(bps);
        volatile int lengthOverhead @unit(b) = default(0b); // extra length added to packets
        volatile double durationOverhead @unit(s) = default(0s); // extra transmission duration added to packets
        volatile double propagationDelay @unit(s) = default(0s); // propagation time to all destinations
        volatile double packetLoss = default(0); // packet loss probability
        @class(ShortcutRadio);
        @signal[transmissionStateChanged](type=long);    // type=inet::physicallayer::TransmissionState
}

File: src/inet/physicallayer/wireless/shortcut/ShortcutRadio.ned

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