ระบบการส่งวีดิทัศน์ที่ปรับขนาดได้หลายผู้รับบนระบบเครือข่ายที่กำหนดโดยซอฟต์แวร์

Abstract

This thesis presents the methods of Scalable Video Coding (SVC) Multicast over Software Defined Networking. We choose to develop 2 parts. In the first part is related to the transmission management, and the second part is described a sender and a receiver. In the first part, we implement the routing algorithm using SDN which focuses on the transmission of video streaming data by using different thresholds according to requirement of different video resolutions and choose the route to transmit based on balance quality of service parameters, called Quantized Level Balance (QLB). We examine this model with traditional network dynamic routing by using the Open Shortest Path First (OSPF) routing. The results are revealed that QLB routing can control the display quality better than OSPF routing. In second part, we design the transmission of multiple video resolutions and receivers by modified SVC-MST (Multi-session transmission) called SVC-MST BOLB since the SVC-MST mode transmission is used to send different video resolutions to several paths. SVC-MST can reduce the usage bandwidth for freezing solution, which is a problem caused by bandwidth congestion. We compare the transmission of the modified SVC-MST with the Advanced Video Coding (AVC), the SVC-SST (Single-session transmission) mode and the tranditional SVC-MST. The maximum delay can be reduced by 46.77% (640x360 and 1280x720) and 66.64% (640x360, 1280x720 and 1920x1080) compared to SVC-SST. However, SVC-MST receiver gets the video that does not match with the correct sequence, resulting in encoded error. Eventually, we introduce buffer to solve the problem of defragmentation.