By João Ascenso, Luminita Vasiu, Carlos Belo, Mónica Saramago
This ebook includes the simplest papers of the 1st foreign convention on e-Business and Telecommunication Networks (ICETE 2004), held in Setúbal (Portugal). The convention was once equipped by way of INSTICC (Institute for platforms and applied sciences of data, communique and regulate) in collaboration with the college of commercial of the Polytechnic Institute of Setúbal, who hosted the development. This convention represented an immense initiative to extend the technical exchanges between execs, who paintings within the e-Business and Telecommunication Networks fields, and who're enforcing new companies and applied sciences affecting the lives of normal shoppers. the main objective of this convention was once to compile researchers and builders from academia and operating in parts concerning e-Business, with a different specialise in Telecommunication Networks. 4 simultaneous tracks have been held, overlaying diverse facets, together with: "Global conversation details platforms and Services", "Security and Reliability in details platforms and Networks", "Wireless communique platforms and Networks" and "Multimedia sign Processing". The sections of this booklet replicate the convention tracks.
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All other settings in this test case are same as the test case 5. Figure 14 depicts the downstream loss rate versus time. Downstream Loss Rate without CBQ 100% 80% mart0:2Mb/ s 60% mart3:2Mb/ s 40% mart4:2Mb/ s 20% 0% 1 11 21 31 41 51 61 Seconds 71 81 91 Figure 14: Loss rate chart for scenario 6. The main observation from the results obtained from this test is that when one MN, two MNs or three MNs are receiving, the total required bandwidth exceeds the total available bandwidth resource. The loss rate is almost 100% for all of the streams.
With CBQ, jitter can be controlled to a constant level as long as the total traffic rate is within the class capacity. If the traffic exceeds the class capacity, then jitter cannot be guaranteed to be at a certain level. It varies according to the total traffic load of the wireless link. From these experiments, we see that at least one way we can use to control network’s jitter; it is to use CBQ method though designing suitable classes for traffic flows and controlling which class each traffic flow goes to.
223 Figure 1: Layout of the test network. Traffic coming from the CN to MNs went through Foreign Agent. Correspondent Node is connected to Foreign Agent through a high bandwidth Internet connection. Foreign Agent is connected to Mobile Nodes through a wireless connection. In the wired part, the available bandwidth was 10 Mbps. In the wireless part, the available bandwidth was limited to 2 Mbps WaveLAN card. The CBQ was installed in Foreign Agent for downstream traffic. The class design is shown in Figure 2.