Adaptation Conflicts of Heterogeneous Devices in Iot Smart-Home

A promising technology such as Internet-of-Things have been introduced into traditional homes, buildings and cities to become smart and offer a wide range of services to simplify and enhance people’s lifestyle, a complex rule structure with a large number of sensing and actuating devices increases the chances of creating rules with faulty behaviors. Detection of sophisticated conflicts in an IoT system is one example of such faulty systems. In this paper, a mechanism is presented to detect such sophisticated conflicts among multi-resident smart-home services. Formally a model considering the functional properties of devices to distinguish a specific new kind of conflicts among the other basic types. Service User Regularity (SUR) conflict detection algorithm is proposed to trace resident habitual usage and behaviour conflicts and regulate them within the rules of the smart-home IoT-system. The system achieved good result; it could detect a reasonable number of targeted type conflicts within a synthesized data set

Enhancement of the Contention Access Period for Reducing Energy Consumption of Industrial Internet of Things Based on IPv6

Abstract: Industrial Internet of Things (IIoT) is an emerging technology in recent years, which is widely utilized for control, manage the manufacturing environment, and monitor production lines in the smart factories. The IPv6 has enabled the use of many IIoT devices, so these devices consume large amounts of energy. Many research efforts were made in this area aimed to improve power consumption and performance. This paper proposed the Contention Access Period Reduction Medium Access Control protocol (CAP Reduction MAC protocol) for reducing the CAP duration size based on IEEE 802.15.4e. The proposed MAC protocol leads to reduce the CAP portion. Thus the number of time slots, which assigned to the sensors will decrease. Moreover, this paper intends to estimate the performance of IIoT devices in terms of energy consumption, throughput, and delay time through an analysis of their respective ways of operation running the Contiki Operating System (OS). To validate the proposed protocol, different experiments are conducted based on the Cooja simulator. The proposed protocol can be reduced the overall energy consumption with up to 64.14 %, decreases the delay by 33.7 %, and increases throughput by 63.0 %