Research on group communication model for computer-supported cooperative work applications;

Research on routing algorithm in group communication of CSCW;

Study on intrusion tolerant group communication;

Secure technology of initiative migration based on mechanism of group communication;

Design and implementation for remote backup system with spread group communication;

Design and implementation of group membership service in group communication system;

The trial shows that the device can meet the needs of hierarchical and real-time control in distribution automation by using multiple logic communication networks based on virtual carrier sense mechanism.

It shows that the device can meet the needs of hierachical and real-time control in its application by using multiple logic communication networks based on virtual carrier sense mechanism, enhanced adaptive analog front end of receiver, adaptive frequency bands and coupling means etc.

A grouping communication model for handling the conflict in computer cluster is discussed.

For the need of large scale parallel computing based on Data Grid that is composed of the multi- clusters, the single clus- ter grouping communication model for multi- level grouping communication has been researched.