The Active Buffer Management Scheme using Virtual Transmission Delay in the IEEE 802.11e Network

Due to the advance of WLAN technology, the use of the multimedia service such as the video streaming service has been increased in the home network or CCTV monitoring for cars or construction materials. However, we need to study the method which decreases the transmission delay and the frame loss rate to provide QoS of the video streaming service. Therefore, this paper proposes an active buffer management scheme to guarantee QoS of the video streaming service in the IEEE 802.11e EDCA. The proposed scheme discards the frame in the HoL(Head of Line) of the buffer based on the priority of each frame and the virtual transmission delay of frame newly arriving at the buffer. In the simulation results, the proposed scheme not only decreases the frame loss probability of important I and P frames but also stabilizes the transmission delay. It may increase the QoS of video streaming services.