WLAN System-Level Simulation Statistics

The WLAN system-level simulation captures these statistics as a structure at each node. This structure is returned as an output by the statistics object function of the wlanNode object.

Default Statistics

If you use the first syntax described on the statistics reference page, these tables describe the function's output.

Statistics Structure

Structure Field	Description
Name	Name of the WLAN node, returned as a string scalar.
ID	ID of the WLAN node, returned as a numeric scalar.
App	Application statistics, returned as a structure.
MAC	MAC layer statistics, returned as a structure. If the node contains multiple devices, this field returns an array of structures.
Mesh	Mesh forwarding statistics, returned as a structure. If the node contains multiple devices, this field returns an array of structures.
PHY	Physical layer (PHY) statistics, returned as a structure. If the node contains multiple devices, this field returns an array of structures.

App Structure

Structure Field	Description
TransmittedPackets	Total number of packets transmitted by the application layer
TransmittedBytes	Total number of bytes transmitted from the application layer
ReceivedPackets	Total number of packets received at the application layer
ReceivedBytes	Total number of bytes received at the application layer

MAC Structure

Structure Field	Description
TransmittedDataFrames	Number of data MPDUs transmitted from the MAC layer, including retransmissions
TransmittedPayloadBytes	Total number of MSDU bytes transmitted from the MAC layer that are acknowledged
SuccessfulDataTransmissions	Number of acknowledged data MPDUs
RetransmittedDataFrames	Number of data MPDUs retransmitted from MAC layer
TransmittedAMPDUs	Total number of A-MPDUs transmitted from the MAC layer, including retransmissions
TransmittedRTSFrames	Total number of RTS frames transmitted from the MAC layer
TransmittedMURTSFrames	Total number of MU-RTS frames transmitted from the MAC layer
TransmittedCTSFrames	Total number of CTS frames transmitted from the MAC layer
TransmittedMUBARFrames	Total number of MU-BAR frames transmitted from the MAC layer
TransmittedAckFrames	Total number of Ack frames transmitted from the MAC layer
TransmittedBlockAckFrames	Total number of BlockAck frames transmitted from the MAC layer
ReceivedDataFrames	Total number of data MPDUs received by the MAC layer
ReceivedPayloadBytes	Total number of MSDU bytes received by the MAC layer
ReceivedAMPDUs	Total number of A-MPDUs received by the MAC layer, with at least one valid subframe
ReceivedRTSFrames	Total number of RTS frames received by the MAC layer
ReceivedMURTSFrames	Total number of MU-RTS frames received by the MAC layer
ReceivedCTSFrames	Total number of CTS frames received by the MAC layer
ReceivedMUBARFrames	Total number of MU-BAR frames received by the MAC layer
ReceivedAckFrames	Total number of Ack frames received by the MAC layer
ReceivedBlockAckFrames	Total number of BlockAck frames received by the MAC layer
ReceivedFCSValidFrames	Total number of MPDUs received by the MAC layer with valid FCS
ReceivedFCSFails	Total number of MPDUs dropped by the MAC layer due to FCS fails
ReceivedDelimiterCRCFails	Total number of frames dropped by the MAC layer due to delimiter CRC fails in the A-MPDU subframes

Mesh Structure

Structure Field	Description
PacketsToBeForwarded	Number of MSDUs to be forwarded
PayloadBytesToBeForwarded	Number of bytes of data to be forwarded
DroppedPackets	Number of MSDUs dropped due to: Insufficient mesh forward hop count No further path found for forwarding Receiving a duplicate MSDU

PHY Structure

Structure Field	Description
TransmittedPackets	Total number of packets transmitted by the PHY
TransmittedPayloadBytes	Total number of payload (PSDU) bytes transmitted by the PHY
ReceivedPackets	Total number of packets received at the PHY
ReceivedPayloadBytes	Total number of payload (PSDU) bytes received by the PHY
DroppedPackets	Total number of packets dropped by the PHY receiver due to: Low signal power Preamble, header, or payload decode failures

Additional Statistics

If you use the second syntax detailed on the statistics reference page, the function returns these statistics in addition to those described above.

App Structure Additional Fields

Structure Field	Description
Destinations	This is an array of structures. Each structure holds statistics that correspond to the destinations of traffic sources that you have added to the node.

Fields of Structures in the Destinations Array

Structure Field	Description
NodeID	Destination node identifier
NodeName	Destination node name
TransmittedPackets	Number of transmitted packets
TransmittedBytes	Number of transmitted bytes

MAC Structure Additional Fields

Structure Field	Description
AccessCategories	This is an array of structures of size 1-by-4. Each structure holds statistics that correspond to one of the four access categories. The four entries of the array correspond to Best Effort, Background, Video, and Voice, respectively.

Fields of Structures in the Access Categories Array

Structure Field	Description
TransmittedDataFrames	Total number of data MPDUs transmitted for the access category from the MAC layer, including retransmissions
TransmittedPayloadBytes	Total number of MSDU bytes transmitted for the access category from the MAC layer that are acknowledged
SuccessfulDataTransmissions	Total number of acknowledged data MPDUs for the access category
RetransmittedDataFrames	Total number of data MPDUs retransmitted for the access category from the MAC layer
RecievedDataFrames	Total number of data MPDUs received for the access category by the MAC layer.
ReceivedPayloadBytes	Total number of MSDU bytes received for the access category by the MAC layer