Research And Implementation Of A Transmission And Distribution Mechanism Of The IoT Information Based On Strategy

With the enhancement of the mobile Internet and access technology,the Internet of Things has been developed rapidly.In the future,there will be more and more IoT application and access devices,and the interaction between these devices and applications,applications and applications are becoming more and more complex.Traditional development mode of chimney and request/response communication mode is no longer suitable for IoT.Decoupling the large-scale application of IoT is becoming business goal.Publish/Subscribe mechanism decouples participant communications effectively.The agent(s)receive publisher(message producer)message and push to the subscriber(message consumer),realizing information distribution on-demand.And joining new publisher or subscriber doesn't have any influence on the existing communications.This paper references the idea of publish/subscribe in the research process,and proposes a strategy-based information transmission and distribution mechanism in IoT.In this mechanism,at first,I design an IoT event data format;then propose a strategy to establish the connection between publisher/subscriber and broker;finally set up an IoT access platform to verify the mechanism.The main work of this paper is as follows:1.Study the IoT information transmission mode,the distributed publish-subscribe model.Combining the characteristics of the IoT and the future development needs,I design an IoT event data format.This paper descripts IoT event in a hierarchical way based on the source of event.Publisher/subscriber are according to the description to publish or consume event information.2.Design and implement a connection strategy.By the strategy,the most suitable broker is automatically selected to connect to publisher/subscriber.It ensures the uniform distribution of the subscription,and realizes the load balance of the broker.3.Propose a Matrix-based broker topology structure of hierarchical grouping,and realize the centralized management of broker in distributed publish/subscribe system.The broker can join and exit automatically.The consumption of network flow and time delay for forwarding event among broker are reduced effectively.4.Through the IoT platform,I have validated the information transmission and distribution mechanism,and realized information distribution among the access devices,rule engine and workflow engine.Also I analyzed the performance of the mechanism.Successfully achieves the availability and reasonableness validation of the mechanism.