An effective mechanism to discover sensor web registry services for wireless sensor network under x-SOA approach

Abstract

The application of WSN is emerging as a new trend in different sphere of modern society. However due to the advancement of SWE, discovering sensor web registry services throughout heterogeneous environments is becoming a challenging task and raises several concerns like performance, reliability, and robustness. Many approaches and frameworks have been proposed to discover the sensor web registry services. Some of the approaches assume that the requests are placed in SOAP compatible formats while others focus on GUI based parametric query processing. We have formulated an approach that uses the Natural Language Query Processing which is a convenient and easy method of sensor data access in comparison to SQL or XML based Query Language like XQuery and XPath. We also propose an architecture based on x-SOA that organizes the method of sensor web registry service discovery in an efficient and structured manner using an intermediary, requester friendly layer called the Request Parser & Query Generator (RPQ) between the service provider and service requester via a service registry. We describe how RPQ facilitates the processing of plain text request query to a most appropriate sensor web service and also an algorithm with implementation for a complete cycle of sensor web registry service discovery.

Performance and Challenges of Service-Oriented Architecture for Wireless Sensor Networks

“…The REST is better throughout and its response time is faster than SOAP. SOAP is used for message communication over SOA [85]. The description and discovery services are a web service description language (WSDL) and universal description discovery and integration (UDDI) [85].…”

“…Similarly, the x-SOA approach [85] is related to previous approaches. There is X-SOA framework for sensor web service discovery mechanism, which is based on the Natural Language Query Processing (NLQP) by using semantic grammar [85].…”

“…There is X-SOA framework for sensor web service discovery mechanism, which is based on the Natural Language Query Processing (NLQP) by using semantic grammar [85]. The framework acts as the intermediate layer, called RPQ (Request Parser & Query generator), which supports interoperability between the service requester and the service registry [85]. A novel algorithm called Sensor Web Registry Services Discovery (SWRSD) is used in all steps of the processes of sensor service discovery [85].…”

“…The framework acts as the intermediate layer, called RPQ (Request Parser & Query generator), which supports interoperability between the service requester and the service registry [85]. A novel algorithm called Sensor Web Registry Services Discovery (SWRSD) is used in all steps of the processes of sensor service discovery [85]. The different layers can interact with each other by Unified Modeling Language (UML) sequence diagrams.…”

A Semantic Search Engine to Discover and Select Sensor Web Services for Wireless Sensor Network

“…The Sensor Registry Service is too abstract in the service oriented Sensor web because too little attention has been given to the detail functionality of the sensor registry service. In [5] a mechanism to discover sensor web registry services based on functional requirements is proposed. However nonfunctional requirements (QoS Parameters) of the services are not considered at all.…”