An Pacharakit Vanitchasatit creator Teerapat Sanguankotchakorn Chairperson Attaphongse Taparugssanagorn Examination Committee Poompat Saengudomlert Examination Committee Royal Thai Government Fellowship Scholarship Donor text series technical report th Pathum Thani, Thailand Asian Institute of Technology 2021 continuing eng 34 leaves : ill. Nowadays, wireless communication has been using widely. In middle up to large scale network, network management is a difficult task to do because of the complexity of the traditional network. Software-Defined Networking has been introduced to centrally control the network by using software applications. Quality of Service is a technology to guarantee network ability to run high demand applications and traffic under limited network capacity. This thesis is about an experiment on network traffic engineering by having QoS provisioning on SDN enabled network. This thesis simulates by using Mininet and Ryu controller. In the simulation, the net work topology is a wireless local area network with three classes of traffic, VoIP, Video streaming, and file transfer. From the simulation, there is no difference between best effort and QoS provisioning when the resource is sufficient for all of the traffic flow and QoS provisioning starts to has effects when the resource is not sufficient in the second and third scenario. In the end, an adaptive Quality of Service can be implemented on Software-Defined Networking architecture and can provide QoS provisioning and get more user connec tion flows. A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Telecommunications Thesis (M. Eng.) - Asian Institute of Technology, 2021 Quality of service (Computer networks) Wireless LANs Wireless communication systems Software-defined networking (Computer network technology) Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B17270 http://203.159.5.9/ait-thesis/detail.php?q=B17270 220914 20260817161529.0