Design of a Telepresentation Protocol Using Reliable Multicast and Its Application to Cyber Education(Special Issue on Network Software)

概要

論文の詳細を見る
Telepresentations will be popular in the future of ubiquitous digital media. To realize a telepresentation easily over the Internet, we design a communication protocol to control a remote material(digital media)used in a telepresentation. We describe our proposed protocol; RMOP(Remote Material Operation Protocol)in this paper. This protocol specifies commands for material operations such as synchronization of slides, drawing, and pointing. Since this protocol just specifies the common formats through IP networks independent of special functions of presentation tools, it can be applied to various presentation tools. To design the protocol, we consider the trade-off between reliability of IP multicast and practical availability in the actual Internet. We adopt the reliable multicast mechanism to improve reliability but not to lose practicality in the protocol. Also, we describe an implementation of our prototype system using RMOP for a telepresentation. Then we show some evaluations such as the protocol overhead and comparisons with the other existing systems. Last, we show a case study of a telepresentation over the Internet using our system.
社団法人電子情報通信学会の論文
2001-12-01