Research And Implementation Of Multi-protocol Equipment Access System Based On Alljoyn

In the era of Internet of Things(IoT), M2M realization require extension from local interconnection into global cross-platform, cross-regional and cross-application interconnection. Currently, the frontier research focuses on how to build a unified IoT platform based on existing heterogeneous network resources at low costs.In this paper, research is conducted for multi-protocol devices to access the AllJoyn framework. The contributions of this paper are summarized as follows:Firstly, an AllJoyn and oneM2M protocol translation model is proposed. This model designs its own protocol translation flow and the way of mapping AllJoyn devices into oneM2M resource tree. Moreover, this model connects AllJoyn devices to oneM2M cloud platform and implements AllJoyn's WAN connection.Secondly, a multi-protocol device access model is designed and the model's hierarchy is presented in details. In this model, devices working on other protocols are transformed into virtual devices and attached to AllJoyn bus to achieve interconnection with real AllJoyn devices.Thirdly, an end-to-end multi-authentication mechanism is designed to improve the security of the AllJoyn system.Finally, an integrated smart home system is built with the function of cloud platform connectivity and multi-protocol device access. Moreover,the interconnection and interoperability of the multi-protocol device access system is verified through experiments. The extended AllJoyn system can better adapt to the needs of IoT developmentj in richer application scenarios, and the extension also enhances the system scalability and compatibility which lays a foundation for establishing a unified networking platform.