Table Of Contents

Measuring Packet Delay Variation

Goals

In this example we explore the various packet delay variation (also known as packet jitter) statistics of application modules.

INET version: 4.4

Source files location: inet/showcases/measurement/jitter

The Model

The packet delay variation is measured in several different forms:

• Instantaneous packet delay variation: the difference between the packet delay of successive packets (packetJitter statistic)

• Variance of packet delay (packetDelayVariation statistic)

• Packet delay difference compared to the mean value (packetDelayDifferenceToMean statistic)

Here is the network:

Here is the configuration:

[General]
network = JitterMeasurementShowcase
sim-time-limit = 5s

# source application ~96Mbps throughput
*.source.numApps = 1
*.source.app[0].typename = "UdpSourceApp"
*.source.app[0].source.packetLength = 1200B
*.source.app[0].source.productionInterval = exponential(100us)
*.source.app[0].io.destAddress = "destination"
*.source.app[0].io.destPort = 1000

# destination application
*.destination.numApps = 1
*.destination.app[0].typename = "UdpSinkApp"
*.destination.app[0].io.localPort = 1000

Results

Here are the results:

Sources: omnetpp.ini, JitterMeasurementShowcase.ned

Discussion

Use this page in the GitHub issue tracker for commenting on this showcase.

Table Of Contents

• Measuring Packet Delay Variation
  • Goals
  • The Model
  • Results
  • Discussion

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