As part of a broader organisational restructure, data networking research at Swinburne University of Technology has moved from the Centre for Advanced Internet Architecture (CAIA) to the Internet For Things (I4T) Research Lab.

Although CAIA no longer exists, this website reflects CAIA's activities and outputs between March 2002 and February 2017, and is being maintained as a service to the broader data networking research community.

One-Way Video Transmission

The following graphs represent the packet inter-arrival time and lengths captured by Web Camera 1 transmitting video to Computer 2. This was the only video data being sent and resulted in two flows, the video data from Computer 1 to Computer 2 and the data acknowledgements from Computer 2 to Computer 1.

Inter-packet Arrival Results


Figure 2.1: Data Packet Flow

Figure 2.2: Data Packet Flow

Figure 2.3: ACK Packet Flow

Figure 2.4: ACK Packet Flow

We can see from Figures 2.1 and 2.2 (cropped for visual ease) that 68.6% of data packets had an inter-arrival time of 0.25msec or less. Figures 2.3 and 2.4 indicate that of all the ACK packets from Computer 2, just under 8% had an inter-arrival time of less than or equal to 0.25msec. We can also clearly see the wide distribution of packet inter-arrival times between 100msec and 200msec.



Packet Length Results


Figure 2.5: Data Packet Flow

Figure 2.6: Data Packet Flow

Figure 2.7: ACK Packet Flow

Figure 2.8: ACK Packet Flow

Figures 2.5 and 2.6 show that just under 31% of packets being sent by Computer 1 were 52bytes long and 37% were 1500bytes long. There is also a low percentage packet length distribution from approximately 1084bytes up to 1500bytes. Both Figures 2.7 and 2.8 show that Comptuer 2 replies to Computer 1 with 46byte ACK packets.





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