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Design and Implementation HDTV Relay Transmission System for Overlay Multicast  

Son, Seung-Chul (전남대학교 컴퓨터공학과 멀티미디어 데이터통신 연구실)
Kwag, Yong-Wan (전남대학교 컴퓨터공학과 멀티미디어 데이터통신 연구실)
Heo, Kwon (전남대학교 컴퓨터공학과 멀티미디어 데이터통신 연구실)
Lee, Hyung-Ok (전남대학교 컴퓨터공학과 멀티미디어 데이터통신 연구실)
Nam, Ji-Seung (전남대학교 컴퓨터공학과 멀티미디어 데이터통신 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.1A, 2007 , pp. 57-65 More about this Journal
Abstract
The overlay multicast that has been recently presented as IP alternative for the IP multicast has been getting much persuasion by the computing power of the hardware and the advancement of the network techniques to enforce Routing in application-level. In an overlay multicast, the system resource and the network bandwidth must be utilized efficiently to service real-time HDTV images. Specifically, the system must consider the delay and the jitter that can be incurred at the application-level. In this paper, we implement a server and a client to broadcast HDTV, in the session composed by the existing overlay multicast protocol. The broadcasting server performs the service using a TV tuner, An HDTV camcorder, and files, clients constituting a multicast group relay the received data to other clients. At this time, the information that the clients report periodically, including their delay and the network state, to the server is used as an important information to maintain an overlay session. The implementation is based on the DirectX and its performance is evaluated by the LAN test bed that has been set.
Keywords
Relay Transmission; Overlay Multicast; MPEG; Directshow; Transport Stream;
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