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Energy-Efficient IoT Service Composition for Concurrent Timed Applications

机译：并发定时应用的节能型IoT服务组合

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摘要

The Internet of Things (IoT) paradigm has established an efficient platform to enable the collaboration and cooperation of self-configurable and energy-aware IoT nodes for supporting complex applications. Heterogeneous IoT nodes provide various kinds of functionalities, which can be encapsulated and represented as IoT services. These services can be composed to provide value-added services, while spatial-temporal constraints of IoT services should be satisfied, and energy consumption of IoT nodes should be balanced to prolong the network lifetime. Given a set of concurrent service requests, a challenge is to recommend efficient service compositions.To address this challenge, this paper proposes to identify and share common functional components, and thus, to integrate and optimize concurrent requests, where a component corresponds to a snippet of IoT service compositions. Shared components in different requests should not violate their temporal dependencies and thus improving resource utilization. Consequently, composing IoT services with respect to concurrent requests can be reduced to a constrained multi-objective optimization problem, which can be solved by heuristic algorithms. Experimental evaluation has been performed with respect to the state-of-art's algorithms, and the results demonstrate the efficiency and performance of this technique, especially when IoT nodes are relatively large in number and their functionalities are highly overlapped with each other. (C) 2019 Elsevier B.V. All rights reserved.
机译：物联网（IoT）范例已经建立了一个高效的平台，可以实现可自配置和节能的IoT节点的协作与协作，以支持复杂的应用程序。异构物联网节点提供各种功能，可以将其封装并表示为物联网服务。可以组成这些服务以提供增值服务，同时应满足IoT服务的时空限制，并且应平衡IoT节点的能耗以延长网络寿命。给定一组并发服务请求，一个挑战是推荐高效的服务组合。为解决这一挑战，本文提出了识别和共享通用功能组件的方法，从而集成和优化并发请求，其中组件对应于一个片段物联网服务组合。不同请求中的共享组件不应违反其时间依赖性，从而提高资源利用率。因此，可以将针对并发请求的IoT服务组合简化为受约束的多目标优化问题，可以通过启发式算法解决。已经针对最先进的算法进行了实验评估，结果证明了该技术的效率和性能，尤其是在物联网节点数量相对较大且其功能高度重叠的情况下。 （C）2019 Elsevier B.V.保留所有权利。

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