Applying Aspect-Oriented Design Methodology to Manage Time-Validity of Information in Internet-of-Things Systems

An Aspect-Oriented Approach to Time-Constrained Strategies in Smart City IoT Applications

“…Due to their resource constraints, IoT applications in smart cities contexts often operate such that their data are time-constrained into a window of validity (WoV) [11,[16][17][18]. In many smart city applications, such as smart transportation, the correctness and applicability of the data may be strongly impacted by the ability to communicate it upstream within the WoV [19].…”

“…In [16], we proposed to model the WoV of IoT device data according to two pa ters: whether the data are relevant to the decision-making algorithm at a particular and whether an acceptable version of the data is cached locally. When the decision ing algorithm which runs on the IoT data attempts to access data which is not in its the supporting software infrastructure is engaged either to fetch the data for the firs or to update an invalidated, locally cached copy [16] (Figure 1). There are various practical approaches used to resolve data in IoT systems whe are outside their WoV.…”

“…. originally queried and cached" [16]. In [16], we proposed that, generally, data in the IoT have a window of validity (WoV) which can be defined according to the relevance of the data at a particular time and whether an acceptable copy of the data is available.…”

“…We propose to extend the aspect-oriented approach we took for managing timeconstrained data in smart city IoT systems [16] to the management of time-constrained strategies. Our research has broad applicability across the smart city components [2], providing a method for improving the efficiency and responsiveness of the strategies, cost, service life, and environmental outcomes in the smart cities context.…”

“…In Section 2, we survey existing approaches to time-constrained data and strategies in smart cities. In Section 3, we present our proposed aspect-oriented mechanism which builds on our research in [16], extending and applying it to the management of time-constrained of strategies. In Section 4, we discuss the benefits of applying our proposed model to the management of time-constrained strategies in IoT systems in a smart cities context.…”