Research And Implementation Of Service Discovery In IOT Service Platform

SOA is a service oriented architecture.It can integrate different platforms in the form of loose coupling,and build a more powerful application.As SOA has many advantages,many researchers have applied SOA to the Internet of things.The developed functions of IOT devices can be packaged into services and the services can be deployed to the network.Service users can find these services through the IOT service discovery system and use the functions of these devices.With the rapid development of the technology of Internet of things and service,more and more enterprises have developed their business functions and device services to the network.It becomes more and more important to find out the service that can meet customer needs from these massive service In an effective way.The IOT service includes the device service and the traditional web service,compared with the traditional web service,the IOT service has a larger scale,and changes more frequently.the traditional service discovery method is not suitable for the complex IOT environment.So it has an important theoretical and practical significance to research on the service discovery in Internet of things.In this paper,the characteristics of the IOT service and the problems faced by the service discovery in Internet of things are introduced.Then the basic concepts and technical details related to service discovery are introduced.After that,the calculation method of semantic similarity between concepts is improved,the semantic information of service function is extracted,and the calculation method of service similarity is proposed and realized.What's more,in this paper,the service clustering algorithm is studied,and then a method of IOT service discovery based on clustering and service similarity is proposed,which can improve the performance of service discovery in Internet of things.After getting a series of similar services,the method of service selection based on QoS is studied.Finally,on the basis of the above research results,an IOT service discovery system is implemented,and a series of experiments have been done to verify the method of IOT service discovery proposed in this paper.The experimental results have proved the validity of the proposed method.