Quality of service seeker

Abstract

In the last free years, there has been important growth in wireless communications. The Quality of Service has become an important consideration that supports many applications that utilize the resources of a network. Some applications are the Voice over IP and the multimedia services such as video streaming. WiMAX network is a new standard network which takes into consideration the quality of service. This project refers to the measurement of network Quality of Service (QoS) parameters of various real time applications like VoIP and video streaming. The first phase of this project is the QoS parameter measurements. In this phase, a set of QoS parameters are defined. These parameters are delay, delay variation (jitter) and packet loss probability. They are used in the development of program. Then the "QoS Seeker application" developed in this project is presented, including its principle. The following contents give a collection and analysis of results of the measurements of QoS parameters using the "QoS Seeker program". The second phase is the video streaming and VoIP call simulation. In this part, elements of general video and VoIP applications are introduced. The parameters that specify the quality of service of the network, such as, throughput, packet loss, jitter and latency, are analyzed for different times of services.