The new OGC Publish/Subscribe Standard - applications in the Sensor Web and the Aviation domain
نویسنده
چکیده
The Open Geospatial Consortium (OGC) has conducted much work in the past on event-based models and architectures. However, the current OGC standard baseline only supports synchronous web service capabilities, which have insofar primarily addressed the request/reply model, where a client makes a request and the server usually responds synchronously, with either the requested information or a failure. Recently, the OGC Publish/Subscribe 1.0 Standard has introduced an abstract model for publish/subscribe message exchange, a long-awaited building block in the OGC suite of geospatial standards. The publish/subscribe pattern is distinguished from the request/reply one by the asynchronous delivery of messages and the ability for a client to specify an ongoing, persistent expression of interest. In this work, we report on the experimentation of the new OGC Publish/Subscribe 1.0 Standard in the context of the OGC Testbed-12 initiative and related fields of work, particularly in the application domains of Sensor Web and Aviation. We illustrate and discuss the enhancements in comparison to previous OGC service architectures, highlighting the benefits of introducing the PubSub 1.0 Standard into the considered systems and their workflows.
منابع مشابه
AHS Model: Efficient Topological Operators for a Sensor Web Publish/Subscribe System
The Worldwide Sensor Web has been applied for monitoring the physical world with spatial and temporal scales that were impossible in the past. With the development of sensor technologies and interoperable open standards, sensor webs generate tremendous volumes of priceless data, enabling scientists to observe previously unobservable phenomena. With its powerful monitoring capability, the sensor...
متن کاملStreaming Data Services to Support Archival and Real-Time Geographical Information System Grids
In this paper we describe our efforts to build a Web Services based architecture to support both real-time and archived geographic data in Geographical Information System (GIS) Grids. We have built and tested Web Service version of OGC Web Feature Service (WFS) that can be used to provide archived geospatial data to various clients. Due to several performance issues described in this paper we a...
متن کاملBenchmarking Publish/Subscribe-Based Messaging Systems
Publish/subscribe-based messaging systems are used increasingly often as a communication mechanism in data-oriented web applications. Such applications often pose serious performance and scalability challenges. To address these challenges, it is important that systems are tested using benchmarks to evaluate their performance and scalability before they are put into production. In this paper, we...
متن کاملHow sensor data interpretation could benefit from description logics: Position paper
In many areas the interest in real-time and content-based data dissemination is increasing. Sensor data might be sent to an interested client automatically (via publish/subscribe facilities) or might be downloaded on demand by sending a query (pull model). Data dissemination and data access are important aspects in a sensor-based environment and both have a wide influence on the architectual de...
متن کاملHow sensor data interpretation could benefit from description logics: A practical case study
In many areas the interest in real-time and content-based data dissemination is increasing. Sensor data might be sent to an interested client automatically (via publish/subscribe facilities) or might be downloaded on demand by sending a query (pull model). Data dissemination and data access are important aspects in a sensor-based environment and both have a wide influence on the architectual de...
متن کامل