A Survey on Service Discovery Mechanism

A wide range of web services are available, with a deployment of a huge number of the Internet of Things (IoT) applications, e.g., smart homes, smart cities, intelligent transport, e-health and many more. In the IoT paradigm, almost every device around us will be on the Internet to provide specific services to end users. A large number of services will be available to help end users, however, providing and selecting appropriate service from a massive number of available services is a challenge of IoT. Service discovery plays a vital role in web service architecture. Traditionally, keyword search has been used for service discovery. The traditional approaches of service discovery cannot be applied as it is for web services in the IoT environment as devices providing, and accessing services are resource constrained in nature, e.g., limited size, limited energy source, limited computational capability, and limited memory. Hence, there is need of a lightweight and semantic service discovery approach for the IoT. This work analyzes different service discovery approaches. This analysis will focus on the key requirements of service discovery mechanism needed for the IoT environment.