Technologies for Information System Infrastructure Construction Based onAutonomous Decentralized System

在本研究项目中，为了满足用户在快速变化的环境中对信息服务的需求，提出了社区架构。每个用户根据自己的物理位置、时间和要提供的服务类型，自主地、动态地与其他用户组成一个本地社区。基于这一概念和体系结构，提出了社区通信和信息处理技术。在分散的环境中，每个社区成员所请求的服务、功能和信息都是动态变化的。自治分散系统的概念是，即使某些子系统可能出现故障或修复，也可以保证整个系统的运行。在此基础上，提出了面向数据的系统架构。在系统中，通过与其他子系统逐步共享功能和信息，实现协作和高保证的通信和信息过程。在社区系统中，通信…More区域是根据所请求的服务水平自主确定的。用户通过发送服务请求来搜索服务提供商，然后该请求逐渐在网络中广播。当服务提供者接收到请求消息时，它在请求区域广播应答消息。回复消息的速度比请求消息快。因此，应答消息可以捕获请求消息，并且可以基于异构请求级别动态构建社区服务区。社区服务区是服务信息分布和共享的区域，可以根据服务提供者和用户分布的变化条件进行动态重构。通过自治协调技术，即使部分社区成员出现故障，服务信息也可以在一定区域内持续分布。为了保证服务的质量和保证，每个成员通过与其他成员合作，自主调整自己的进程负荷。自治分散式社区系统平台已经实现。在此平台上，通过Internet进行了连接实验。结果证明了所提出的体系结构和技术的有效性，实现了研究项目的目标。少

In this research project, to meet users required information service in rapidly changing environment, community architecture has been proposed. Each user autonomously and dynamically forms a local community with other users based on their physical locations, time and the kind of service to be provided. Based on this concept and architecture, community communication and information process technologies are proposed.1. In the decentralized environment, the requested service, function and information of each community member are changing dynamically. The concept of autonomous decentralized system is that even if some subsystems may be failed or repaired, the operation of whole system can be assured. Based on this concept, data-oriented system architecture is proposed. In the system, the cooperation and high-assurance communication and information process can be implemented by gradually sharing the function and information with other subsystems.2. In the community system, the communication … More area is autonomously determined according to the requested service level. The user sends a service request to search a service provider, and then the request is gradually broadcasted in the network. When a service provider receives a request message, it broadcasts the reply message in request area. The speed of reply message is faster than request message. As a result, the reply message can catch the request message, and the community service area can be dynamically constructed based on the heterogeneous request levels.3. The community service area, in which the service information is distributed and shared, can be dynamically reconstructed according to the changing conditions of service provider and users distribution. Even if some community members may be failed, the service information can be continuously distributed in the certain area by the autonomous coordination technology. To guarantee the quality of service and its assurance, each member autonomously adjust its process load by cooperating with other members.The autonomous decentralized community system platform has been implemented. Based on this platform, the join experiments were performed through the Internet. As a result, the effectiveness of proposed architecture and technologies is proved, and the objective of the research project is achieved. Less