The Internet of Things (IoT) infrastructure with numerous diverse physical devices are growing up rapidly, which need a dynamic services coordination approach that can integrate those heterogeneous physical devices into the context-aware IoT infrastructure. This paper proposes a situation-aware dynamic IoT services coordination approach. First, focusing on the definition of formal situation event pattern with event selection and consumption strategy, an automaton-based situational event detection algorithm is proposed. Second, the enhanced event-condition-action is used to coordinate the IoT services effectively, and also the collaboration process decomposing algorithm and the rule mismatch detection algorithms are proposed. Third, the typical scenarios of IoT services coordination for smart surgery process are also illustrated and the measurement and analysis of the platform's performance are reported. Finally, the conclusions and future works are given.

Internet of Things (IoT) technology demands a complex, lightweight distributed architecture with numerous diverse components, including end devices and applications adapted for specific contexts. This paper proposes a situation-aware IoT services coordination platform based on the event-driven service-oriented architecture (SOA) paradigm. Focus is placed on the design of an event-driven, service-oriented IoT services coordination platform, for which we present a situational event definition language (SEDL), an automaton-based situational event detection algorithm, and a situational event-driven service coordination behavior model, which is based on an extended event-condition-action trigger mechanism. Moreover, we propose a reliable real-time data distribution model to support the effective dispatching sensory data between information providers and consumers, which is based on the grid quorum mechanism to organize those brokers into a grid overlay network to facilitate the asynchronous communication in a large-scale, distributed, and loosely coupled IoT applications environment. We also illustrate the various illustrations for IoT services coordination and alarming disposal process of coal mine safety monitoring and control automation scenarios, and also report the measurement and analysis of the platform's performance.

As the convergence between telephony systems and data systems at all levels of the stack, provision of hybrid services that span multiple networks have attracted much more attentions from both academic and industry communities. The Internet of Things (IoT) is a novel paradigm that is rapidly gaining ground which needs to pay special attention to. In this paper, we present the Flexible Hybrid Service Supporting Platform (FHSSP) leverages on Service-Oriented Architecture (SOA) and Web services technologies. Aiming at the dynamic and flexible characteristics of the heterogeneous network environment, we introduced the template reuse based service creation, flexible service execution as well as resource adaptor methodologies, which ensure FHSSP to deliver “User-Centric” hybrid services in a rapid, cost-effective and highly scalable way. Specifically a typical communication Web services based multimedia conferencing system (MMCS) is presented as an illustrative example of applying FHSSP. Finally we conclude the paper with future work.

The merging of telecommunication and Internet domains is a real challenge for supporting the evolution towards the next generation of Web services. Enterprise service bus (ESB) has been regarded as a promising way to support dynamic and agile service integration in distributed heterogeneous environments. As communication services have strong real-time requirements and are based on asynchronous interactions, generic ESB based service integration is no longer suitable. This paper proposes an enhanced ESB based execution platform in which a low-latency service engine has been seamlessly integrated to support flexible communication Web services over heterogeneous networks. The design and implementation of the enhancements, a novel communication Web services based multimedia conference system, the prototype, and some preliminary performance measurements are presented. The performance results are encouraging.