XMac

compound module

Implementation of X-MAC. See C++ documentation for details.

Inheritance diagram

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

Extends

Name	Type	Description
MacProtocolBase	simple module	Module base for different MAC protocols.

Parameters

Name	Type	Default value	Description
interfaceTableModule	string
address	string	"auto"	MAC address as hex string (12 hex digits), or "auto". "auto" values will be replaced by a generated MAC address in init stage 0.
debug	bool	false	debug switch
stats	bool	true	collect statistics?
slotDuration	double	1s	BMAC specific parameters how long is one slot?
checkInterval	double	0.01s	how long is the check interval (CCA)?
animation	bool	true	should we animate the nodes with colors depending on their state or not?
bitrate	double	19200 bps	bit rate
txPower	double	50 mW	tx power
useMACAcks	bool	false	should mac send and expect acknowledgments?
macMaxFrameRetries	int	3	maximum number of frame retransmission only used when usage of MAC acks is enabled
headerLength	int	80b	length of MAC headers
ctrlFrameLength	int	headerLength
mtu	int	0B	mtu
maxTxAttempts	int	2	Maximum transmission attempts per data packet, when ACKs are used
radioModule	string	"^.radio"	The path to the Radio module //FIXME remove default value

Properties

Name	Value	Description
display	i=block/rxtx
class	XMac
selfMessageKinds	inet::XMacTypes

Gates

Name	Direction	Size	Description
upperLayerIn	input
upperLayerOut	output
lowerLayerIn	input
lowerLayerOut	output

Signals

Name	Type	Unit
packetDropped	inet::Packet

Source code

//
// Implementation of X-MAC.
// See C++ documentation for details.
//
module XMac extends MacProtocolBase like IMacProtocol
{
    parameters:
        string address @mutable = default("auto"); // MAC address as hex string (12 hex digits), or
                                                   // "auto". "auto" values will be replaced by
                                                   // a generated MAC address in init stage 0.

        // debug switch
        bool debug = default(false);
        //collect statistics?
        bool stats = default(true);

        // BMAC specific parameters
        // how long is one slot?
        double slotDuration @unit(s) = default(1s);

        // how long is the check interval (CCA)?
        double checkInterval @unit(s) = default(0.01s);

        // should we animate the nodes with colors depending on their state or
        // not?
        bool animation = default(true);

        // bit rate
        double bitrate @unit(bps) = default(19200 bps);

        //tx power
        double txPower @unit(W) = default(50 mW);

        //should mac send and expect acknowledgments?
        bool useMACAcks = default(false);

        // maximum number of frame retransmission
        // only used when usage of MAC acks is enabled
        int macMaxFrameRetries = default(3);

        // length of MAC headers
        int headerLength @unit(b) = default(80b);
        int ctrlFrameLength @unit(b) = default(headerLength);

        // mtu
        int mtu @unit(B) = default(0B);

        // Maximum transmission attempts per data packet, when ACKs are used
        int maxTxAttempts = default(2);

        string radioModule = default("^.radio");   // The path to the Radio module  //FIXME remove default value

        @class(XMac);
        @signal[packetDropped](type=inet::Packet);
        @selfMessageKinds(inet::XMacTypes);
}

File: src/inet/linklayer/xmac/XMac.ned