Department of Computer Engineering
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Browsing Department of Computer Engineering by Author "AL-FAYYADH, Hayder"
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Item COMPARISON OF QUALITY OF SERVICE (QoS) SUPPORTS IN IPV4 AND IPV6(2015-06-25) AL-FAYYADH, Hayder; KOYUNCU, MuratProviding guaranteed services in the current Internet has become extremely essential to fulfill the requirements of Internet users. With an increase in the number of users and demand for multimedia applications like video streaming, VoIP and video conferencing, larger bandwidth requirement increases drastically since such applications are very sensitive to delay, packet loss, and jitter. However, it is not feasible to provide enough bandwidth to satisfy such a high demand. Quality of Service (QoS) is an important network performance parameter having a significant impact on multimedia applications. IPv6 was designed to improve QoS supported by IPv4, as well as other improvements. In this thesis, we discuss quality of service and various parameters affecting it on the Internet. We compare IPv4 and IPv6 protocols in terms of their performance for multimedia applications. In this scope, various queuing algorithms (First in First Out FIFO, Priority Queuing-PQ, and Weighted Fair Queuing-WFQ), which are typical scheduling algorithms used by routers, are examined to see their effects for multimedia applications in IPv4 and IPv6 environments. In addition, integrated services (IntServ) and differentiated services (DiffServ), which are two important techniques developed to provide QoS on the Internet, are elaborated again in IPv4 and IPv6 environments. For comparisons, a simulation framework based on OPNET Modeler is used for modeling, simulating and analyzing network behaviors. The results obtained from the simulations clearly show that the use of IPv6 with different QoS techniques has better performance in terms of jitter and delay compared to IPv4 protocol.