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Single Active Web Camera Traffic ResultsThe following graphs represent the inter-packet arrival times and packet lengths for Connection A with movement in front of the camera. Web Camera 2 was not transmitting during this test.
Inter-packet Arrival Results
We can see that when there is activity in front of the web camera, packet transmission in both directions increases. Figures 3.1 and 3.3 show that a large percentage, an average of over 26% in Figure 3.1 and almost 53% in Figure 3.3, of inter-packet arrival times occured between 1usec and 249usec. A further more than 2% of packets had a 1ms or less inter-arrival time for both directions of packet transmission. Additional peaks occured at around 40, 60 to 70 and 90ms. This can be seen in Figures 3.2 and 3.4, where the cumulative graph curve gradients suddenly increase due to the rise in number of packets arriving at the corresponding inter-packet times. Less than 61% of packets in Figure 3.1 and less than 28% of packets in Figure 3.3 had an inter-arrival time between 35 to 100ms. In Figure 3.3 an average of over 10% inter-packet arrival times are 2ms.
Packet Length Results
Figures 3.5 and 3.6 show that less than 95% of packets were 46 bytes long (TCP ACKs), with over 4% being 52 bytes long. This is a very similar pattern as found for when there was no activity in front of the web camera. Figure 3.6 is the cumulative graph corresponding to Figure 3.5.
Figure 3.7 shows the majority of packet lengths, less than 53% and 12% were 1500 bytes and 64 bytes long respectively. In Figure 3.8, the gradual increase in gradient of the cumulative graph illustrates that only a very small percentage of other packet sizes occured.
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