Abstract
In the industrial Internet of things (IIoT), there is always a strong demand for real-time information transfer. Especially when deploying wireless/wired hybrid networks in smart factories, the requirement for low delay interaction is more prominent. Although tree routing protocols have been successfully executed in simple networks, more challenges in transmission speed can be observed in the manufacturing broadband communication system. Motivated by the progresses in deep learning, a smart collaborative routing protocol with low delay and high reliability is proposed to accommodate mixed link scenarios. First, we establish a one-hop delay model to investigate the potential affects of Media Access Control (MAC) layer parameters, which supports the subsequent design. Second, forwarding, maintenance, and efficiency strategies are created to construct the basic functionalities for our routing protocol. Relevant procedures and key approaches are highlighted as well. Third, two sub-protocols are generated and the corresponding implementation steps are described. The experimental results demonstrate that the end-to-end delay can be effectively cut down through comprehensive improvements. Even more sensor nodes and larger network scale are involved, our proposed protocol can still illustrate the advantages comparing with existing solutions within IIoT.
Highlights
According to statistics, the number of IoT devices continues to grow rapidly
We introduce tree topology to make most nodes choose the parent node with wired link to complete the process of joining the tree, which can balance the load and reduce the delay of packet queuing, reducing the end-to-end delay
We propose a improved kernel tree routing protocol (IKTRP)
Summary
The number of IoT devices continues to grow rapidly. It has reached 8.4 billion by 2017 and it is expected to reach 30 billion by 2020, which is far more than the current global population combined [1]. There’s no denying that with the development and application of high rate IoT devices, IIoT has been facing the explosion of data volume This poses a serious challenge to the existing routing protocols in communication [5]. The purpose is to design a routing protocol which can meet the requirement of low delay and adapt to the complex mixed link scenario in smart factory environment. It can effectively reduce the routing overhead brought by packet, improve the reliability and availability of industrial Internet.
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