Toward Efficient Service Composition Techniques in the Internet of Things

Internet of Things (IoT) is anticipated to bridge various technologies to allow new applications through linking physical things together in the future. Increasing facilities through the composition of services are considered as an essential module in this technology. Several types of services can be supplied in the IoT using the user's requirements to consider the user needs. However, the service composition in the IoT does not have any systematic and complete study about examining its significant techniques. So, this paper aims to investigate the available methods in this field using a systematic manner. To achieve a comprehensive view of the topic, all of the selected approaches are divided into four distinct categories, including framework, service oriented architecture and RESTful, heuristic, and model-based. The detailed classifications have been presented using various parameters based on the examination of the existing techniques. Also, the benefits and drawbacks of the state-of-the-art service composition techniques and the important challenges of them are discussed. Finally, we have explained future work in the field of service composition in the IoT with detail in order to make an effective and efficient way for researchers in this area. We also have identified four important parameters to examine the selected service composition mechanisms in the IoT. Scalability is improved in 45.4%, execution time in 36.3%, cost in 27.2%, reliability in 22.7%, availability in 18.1%, and response time in 13.6% of the reviewed articles.