| With the swift development of computer network and communication technology, Digital Home network has become a new focus of the communication field and is also the key of 3C fusion. How to realize the interconnection and interoperation across various information devices existing in the Digital Home network is the main problem, which needs to be resolved in the Digital Home development. IGRS (Intelligent Grouping and Resource Sharing) protocol was put forward by Lenovo to provide capacity of interconnection and interoperation across various information devices existing in the corporation or home network. It is a simple, high-efficient and easy technology.According to the project details which the writer participated in the project of the practice, this paper makes an in-depth analysis of the IGRS. The protocol is an application layer protocol and mainly used to transmit wireless audio and video information. It defines how to realize device auto-discovering, dynamic inter-networking, sharing resource and collaborating service among many kinds of information devices in the wire or wireless LAN.By that the protocol was designed and realized with separating module method, every function flow chart and code of the device group module is designed and realized in the IGRS and two new algorithms are proposed to finished unsolved problems of device group module.One is based on target-function fuzzy ISODATA clustering algorithm to solve the problem of device grouping, and another is based on fuzzy equivalent matrix clustering algorithm to solve the problem of device selection. Through the analyzing of practiced examples, using the two algorithms makes device grouping and selection more intelligent and easier, and the effect of them is accordant to the anticipated desire. At last the two algorithms ire modularized, and the method and flow charts of realizing of them are designed, which can et system reasonably and automatically finish the function of device grouping and selection. |
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