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Nt1310 Unit 7 Lab Report

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CHAPTER 4

RESULTS AND DISCUSSION

4.1 INTRODUCTION
In the simulations, we use the performance metrics of packet loss, delay, jitter and throughput to evaluate the performance of Mobile WiMAX in delivering video streaming applications. The simulation results for 1 hour interval of three different video encoders to two client subscribers of Mobile WiMAX with different types of pathloss model were presented in this chapter.
4.2 RESULTS AND DISCUSSION
The results obtained for this project were analyzed based on the expected results in order to evaluate the performance of the video streaming application in Mobile WIMAX. The performance metrics should be in the range of the QoS specifications such as:
• Packet loss: → 1 - (# of received packets) / (# of …show more content…
For MPEG-4 Part 2 simulation result, there is no packet jitter value for the first three minutes. This is because of scanning and processes involved when streaming the video contents. The next 13 minutes, packet jitter for MS_1 increased to 0.55 us and remained constant at 0.5 us for the next interval. As for MS_2, the graph increase to 0.15 us for the next minutes and remain the constant at 0.11 us for the one hour interval. Figure 4.3d: Packet delay variation versus time for MPEG-4 Part 2.
As for H.264/AVC simulation result, there is no packet jitter value for the first three minutes. This is again because of scanning and processes involved when streaming the video contents. Then, the packet jitter severely increased from 15 ps to 27 ps and decreased drastically for the next minutes. For MS_2, there is almost null jitter since the speed of data transmission rate is very high. However, all packet jitter results are approximately equal to zero for H.264/AVC video codec application in Mobile WIMAX. Figure 4.3e: Packet delay variation versus time for H.264/AVC.

Table 4.2: Summary of resultant packet dropped.
Video Encoder Maximum Jitter

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