Research And Implementation On Some Key Technologies Of Ubiquitous Network For Multi-Device Coordination

The rapid development of network communication technology makes a wide use about the network, which eventually forms a ubiquitous network environment. In ubiquitous network, the coexistence of various network communication technologies lead to the formation of heterogeneous network. At the same time, the various terminals, such as sensor object, RFID, dimensional barcode object as well as personal device, for example PC,PDA etc, are all user-centered and provide services for users. However, with the increasing users’needs, single terminal can’t be able to provide satisfactory service, which requires more terminals to work together to provide users with a unified service to meet users’needs, including the transmission efficiency, user experience, security etc.To meet users’needs about multi-terminal work collaboratively, some of the key technologies in multi-terminal collaborative technology in ubiquitous network are researched and designed. In order to achieve terminal collaborative work, multi-interface characteristics need to be researched at first. In this article, network interface such as ethernet interface and wireless interface are designed and managed, which can serve the terminal to work together. With the multi-interface technology’s support, some key technologies, for example cross discovery, interconnection, interoperability, are researched and designed. In cross discovery mechanism, the terminals can know each other’s service information by multiplexing the SSID (Service Set Identifier) information. In interconnection mechanism, self-cited AP (Access Point) is produced according to the terminal device properties and the AP terminal can assign IP (Internet Protocol) address to STA terminal, with which the interoperability can be achieved. In interoperability mechanism, to meet the transmission efficiency requirement, the characteristics of the multi-interface are used to achieve concurrent transmission.At the end of this paper, the design of cross discovery, interconnection, interoperability mechanisms are validated according to building experimental platform. Experiment results show that it can meet users’ needs well with the cross discovery, interconnection, interoperability mechanism designed in this paper. Regardless of whether there is a basis terminal AP, the user experience and the traffic flow transmission efficiency can be effectively improved with the concurrent multi-path interoperability mechanism designed in this paper.