Kouji Yata

Component-oriented network management system development

The integration and seamless interconnection of local and global networks enable a variety of network services. However, they also mean that the swift evolution of network systems and associated computer technologies require rapid and flexible development of network management. In this paper, we propose a component-oriented approach that provides rapid and flexible construction of a network management system.

Implementation of a distributed network middleware "CSC" on OSGi frameworks

To make communication a comfortable experience for users, we have developed a middleware called communication service concierge (CSC). This is a network middleware for distributed environments, and it consists of communication resource management (CRM) and communication logic management (CLM). Communication service concierge realizes comfortable communications by combining CRM and CLM. Communication logic management provides a framework to directly operate communication data. Communication resource management provides a framework on which downloadable software components can be executed on distributed platforms, and plays a primary role in controlling CSCs communication. Using Java, we implemented CRM on OSGi service platforms, which provide dynamic executions of the software components locally. In other words, CRM provides a distributed agent computing feature for OSGi. In this paper we describe the roles and implementations of CRM1 especially for security functions, as well as describing how CRMs software components work cooperatively.

The Design and Implementation of an Event Handling Mechanism

This paper proposes an event handling mechanism and its application programming interfaces to the X Window System1 for the purpose of telecommunication networks management application program development. The proposed mechanism is experimentally implemented on the UNIX2 operating system using the C++ programming language based on object oriented concepts. The prototype of a telecommunication networks management system including OSI systems management protocol machines and sophisticated human-machine interfaces was implemented based on the proposed framework. It is confirmed that the mechanism provides sufficient environment for programmers without any knowledge of distributed application programming and window programming.