The Research Of Heterogeneous Internet Of Things Fusion Based On Alljoyn

Defined as the "the Internet consist of things and their connection",the Internet of things(IoT)is the extension of the Internet based on the objective,which is the extremely important link in the technology chain in the new generation of information technology.Due to the rapid development of the Internet,various standards,communication,and other emerging services framework,nowadays the existing field of things is too fragmented.There is no matched points and connection among these standards,which make it too inconvenient to cooperate.Therefore,the interworking between the various protocols became an urgent problem now.Based on existing various service framework,a complete IoT solution including Smarthome simulation environment and gateway service platfrom has be raised by this paper.The main contents are summarized as follows:(1)The investigation of IoT fundamental technology has to be performed.First,the paper describes the technical basis of AllJoyn.Then,the hardware-independent communication framework and the technical realization of access,devices and operation system of AllJoyn has been researched.Thirdly,the LAN's short-range communication service method based on AllJoyn has been analysized.Finally,this paper describes the realization of WAN communication framework of IoT-enabled devices.Due to the above part,the possibility of WAN communication between M2M standard and AllJoyn technology is conformed.(2)Heterogeneous IoT communication mechanism is designed in this paper.After studying the the underlying communication mechanism above,the communication process of AllJoyn-enabled smart devices has been proposed,and the Smarthome gateway is established,so that the the connection among Smarthome devices,sensors and Smarthome gateway could be set up,which makes it possible for the data transmitting.Because the communicatinon process of heteroheneous network based on M2M has been proposed,the operations like construction,update,delete and so on between Smarthome gateway and the cloud has been realized.Then by the raise of data communications abstract modeling based the AllJoyn data encapsulated byM2M,the paper realizes data acquired by Smarthome gateway platform can be transmitted to the cloud platform in accordance with standard format,then the data can be obtained by mobile terminal.(3)The heterogeneous IoT communication mechanisms has been realized and tested.The system transferred the peremeters transmitted from AllJoyn underlying bus into the M2M standard data and forward to the Smarthome gateway platform by protocol conversion,complete the communication process of AllJoyn-enabled devices and M2M heterogeneous IoT network gateway has been acomplished.Then the Smarthome gateway transmits the data to the cloud platform,so as to complete the whole system.After testing the whole systme,interworking throughout simulation platform is proved.Based on design ofthe heterogeneous network,the communication of mechanism of IoT has been established in both WAN and LAN and a set of complete solution to IoT Smarthome has been raised.