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Network delays can cause serious usability problems in real-time collaborative environment. Network resources such as bandwidth, etc. are still the bottleneck in real-time collaborative environment. In addition, collaborative messages in groupware system may have different requirements for network QoS and different network protocols behave distinct performances on reliability and network delay aspects. Thus, it seems unreasonable to use a single protocol to send all interaction data. We did some experiments to investigate the impact on collaborating process which produced by packet size and network QoS requirement of different message type in collaborative graphics editing environment. According to the message characteristic, all messages are divided into several different types and for each type, suitable network protocols are used for exchanging information. Some experiments are made to test the usability of this integrated transmitting model.
Systems, Man and Cybernetics, 2004 IEEE International Conference on (Volume:4 )
Date of Conference: 10-13 Oct. 2004