With the rapid development of the Internet and related network technologies, wireless networks and multimedia data play an increasingly large role in daily life activities. Numerous mobile device users use services such as VoIP, social networking applications that support the exchange of messages, voice calls, and video calls based on the Internet connection. Therefore, transmitting multimedia data on wireless networks plays a pivotal role for today‘s Internet users. Evaluation of this type of network service is usually based on QoS (Quality of Service) criteria, which have many technical characteristics such as delay, packet loss, bandwidth, and throughput. However, with the explosive development of multimedia services today, the Quality of Experience (QoE) criteria is becoming increasingly important because it is related to the direct perception of the user, specifically with a particular type of multimedia service, with more qualitative than quantitative factors. QoE evaluation therefore also has a different approach than traditional QoS evaluation. In this paper, we analyze some factors related to QoE evaluation for multimedia data and use the ns-3 simulation software to evaluate QoE with some scenarios of multimedia data transmission over a wireless network.
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