MQTT-S &amp;#x2014; A publish/subscribe protocol for Wireless Sensor Networks

Hunkeler, Urs; Truong, Hong Linh; Stanford-Clark, Andy

doi:10.1109/comswa.2008.4554519

Cited by 626 publications

(265 citation statements)

References 12 publications

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“…Especially in the context of an exploratory tool, this approach allows to build up an increasingly extensive knowledge space, which allows repetitive queries to be answered very quickly, which then allows to provide an interactive web-based user interface where interested stakeholders can explore different simulation scenarios. For first-time simulation queries with no preexisting results, it is planned to develop an asynchronous solution based on MQTT [24], [25], which asynchronously sends intermediate simulation results to the client so that it can visualize first partial results and thus be more responsive.…”

Section: Discussionmentioning

confidence: 99%

Towards an Agent-based Simulation of Building Stock Development for the City of Hamburg

Preisler

Dethlefs

Renz

et al. 2017

Proceedings of the 2017 Federated Conference on Computer Science and Information Systems

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Abstract-In the context of European climate goals municipalities have an increasing interest in an accurate estimation of current and future energy demand in buildings, as the domestic energy consumption is one of the major adjusting screws for the reduction of electrical and thermal energy consumption, whereas the demand for space heating has the highest impact. As part of the ongoing GEWISS project it is planned to create a geographical information system (GIS) to visualize domestic and industrial heat consumption in the city of Hamburg (Germany) to support political decision making by linking the development of urban areas and the district heating grid. Additionally, it is planned to provide simulation capabilities to offer planning assistance for future development. This paper will present the underlying agent-based simulation system that is used to simulate the development of the building stock. Thereby, the simulation approach and first results regarding the development of the renovation state of the building stock based on a study about the renovation behavior of different types of home-owners of detached and terraced houses will be presented.

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Section: Discussionmentioning

confidence: 99%

Towards an Agent-based Simulation of Building Stock Development for the City of Hamburg

Preisler

Dethlefs

Renz

et al. 2017

Proceedings of the 2017 Federated Conference on Computer Science and Information Systems

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“…It also supports sleeping clients (subscribers/publishers) and size-limited packets to be compliant with ZigBee. Moreover, most of the protocol logic is handled in the broker and the gateway, which makes the device's implementation lightweight [65]. Although MQTT is already implemented in various projects [66], there is a lack of evaluation regarding the energyefficiency of the protocol.…”

Section: Bluetooth Low Energy (Ble)mentioning

confidence: 99%

Energy efficiency in wireless sensor networks: A top-down survey

Rault¹,

Bouabdallah²,

Challal³

2014

Computer Networks

761

443

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The design of sustainable wireless sensor networks (WSNs) is a very challenging issue. On the one hand, energyconstrained sensors are expected to run autonomously for long periods. However, it may be cost-prohibitive to replace exhausted batteries or even impossible in hostile environments. On the other hand, unlike other networks, WSNs are designed for specific applications which range from small-size healthcare surveillance systems to large-scale environmental monitoring. Thus, any WSN deployment has to satisfy a set of requirements that differs from one application to another. In this context, a host of research work has been conducted in order to propose a wide range of solutions to the energysaving problem. This research covers several areas going from physical layer optimization to network layer solutions. Therefore, it is not easy for the WSN designer to select the efficient solutions that should be considered in the design of application-specific WSN architecture.We present a top-down survey of the trade-offs between application requirements and lifetime extension that arise when designing wireless sensor networks. We first identify the main categories of applications and their specific requirements. Then we present a new classification of energy-conservation schemes found in the recent literature, followed by a systematic discussion as to how these schemes conflict with the specific requirements. Finally, we survey the techniques applied in WSNs to achieve trade-off between multiple requirements, such as multi-objective optimisation.

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“…data semantics, application behaviour usage such a operation sequences) still result in interoperability issues to address; this is particularly true of the IoT domain with lightweight middleware (to operate on resource constrained devices), transporting highly heterogeneous data; there are a number of IoT middleware solutions, e.g. UbiSOAP [8], Hydra [18], DDS middleware [17] and MQTT [13]. Hence, our interoperability framework provides added value above middleware solutions, allowing multiple technologies to be deployed and then supporting developers address further application and middleware interoperability problems.…”

Section: Related Workmentioning

confidence: 99%

Model-driven interoperability: engineering heterogeneous IoT systems

2015

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Interoperability remains a significant burden to the developers of Internet of Things systems. This is because resources and APIs are dynamically composed; they are highly heterogeneous in terms of their underlying communication technologies, protocols and data formats, and interoperability tools remain limited to enforcing standardsbased approaches. In this paper, we propose model-based engineering methods to reduce the development effort towards ensuring that complex software systems interoperate with one another. Lightweight interoperability models can be specified in order to monitor and test the execution of running software so that interoperability problems can be quickly identified, and solutions put in place. A graphical model editor and testing tool are also presented to highlight how a visual model improves upon textual specifications. We show using case-studies from the FIWARE Future Internet Service domain that the software framework can support non-expert developers to address interoperability challenges.

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MQTT-S — A publish/subscribe protocol for Wireless Sensor Networks

Cited by 626 publications

References 12 publications

Towards an Agent-based Simulation of Building Stock Development for the City of Hamburg

Towards an Agent-based Simulation of Building Stock Development for the City of Hamburg

Energy efficiency in wireless sensor networks: A top-down survey

Model-driven interoperability: engineering heterogeneous IoT systems

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