tgax-video-example.cc File Reference

A simple buffered video streaming traffic generator example over Wi-Fi. More...

#include "ns3/applications-module.h"
#include "ns3/core-module.h"
#include "ns3/internet-module.h"
#include "ns3/mobility-module.h"
#include "ns3/network-module.h"
#include "ns3/wifi-module.h"

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Go to the source code of this file.

Functions
void	PacketReceived (std::string context, Ptr< const Packet > packet, const Address &address)
	Callback invoked when the PacketSink receives a packet.
void	VideoFrameGenerated (uint32_t frameSize)
	Callback invoked when a video frame is generated.
void	VideoPacketSent (Ptr< const Packet > packet, Time latency)
	Callback invoked when a video packet is transmitted.

Detailed Description

A simple buffered video streaming traffic generator example over Wi-Fi.

This example demonstrates how to set up a basic ns-3 simulation with video streaming traffic over a Wi-Fi network. It includes support for:

1. Buffered video streaming (BV1-BV6): Different bit rates from 2Mbps to 15.6Mbps
2. Multicast video streaming (MC1-MC2): 3Mbps and 6Mbps multicast
3. Custom video parameters: User-defined Weibull parameters and bit rate

The simulation consists of:

• A simple Wi-Fi network with one AP (Access Point) and one or more STAs (Stations)
• Video traffic flowing from the AP to the STA(s)
• Application-level tracing to observe video frames being generated and sent

The video traffic model follows IEEE 802.11-14/0571r12 TGAX evaluation methodology:

• Video frame sizes are drawn from a Weibull distribution
• Network latency is modeled using a Gamma distribution (mean ~14.8ms)
• Multiple predefined profiles for different video quality levels

To run with default settings (BV1, 2Mbps): ./ns3 run tgax-video-example To run with higher bit rate: ./ns3 run "tgax-video-example --model=BV3" To run with multicast: ./ns3 run "tgax-video-example --model=MC1" To run with TCP: ./ns3 run "tgax-video-example --protocol=tcp"

To disable verbose logging: ./ns3 run "tgax-video-example --verbose=false"

Definition in file tgax-video-example.cc.

Function Documentation

PacketReceived()

void PacketReceived	(	std::string	context,
		Ptr< const Packet >	packet,
		const Address &	address )

Callback invoked when the PacketSink receives a packet.

Parameters

context	The context string
packet	The received packet
address	The sender's address

Definition at line 322 of file tgax-video-example.cc.

References NS_LOG_INFO.

VideoFrameGenerated()

void VideoFrameGenerated

(

uint32_t

frameSize

)

Callback invoked when a video frame is generated.

Parameters

frameSize

The size of the generated frame in bytes

Definition at line 316 of file tgax-video-example.cc.

References NS_LOG_INFO.

VideoPacketSent()

void VideoPacketSent	(	Ptr< const Packet >	packet,
		Time	latency )

Callback invoked when a video packet is transmitted.

Parameters

packet	The transmitted packet
latency	The network latency applied to the packet

Definition at line 309 of file tgax-video-example.cc.

References ns3::Time::As(), NS_LOG_INFO, and ns3::Time::US.

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