Unleashing the potential of Real-time Internet of Things. Biri, A. Ph.D. Thesis, ETH Zurich, December, 2017. ![Unleashing the potential of Real-time Internet of Things [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex With the recent surge in the interest for the Internet of Things (IoT) and an increased deployment of cyber-physical systems (CPS) in commercial and indus- trial applications, distributed systems have gained a significance influence on modern civilization and are performing increasingly complex tasks. Building such platforms in a reliable manner is challenging, as they include concurrent tasks on the application and the communication layers. As the majority of such devices features a single processor, tasked with both communicating over the network as well as sensing and computing, real-time scheduling conflicts arise as the resource separation of the applications in software is difficult to manage. To achieve such independence, we propose a platform consisting of dedicated application (AP) and communication (CP) processors which are completely de- coupled in terms of resource access, clock speeds and power management using BOLT. Leveraging this hardware separation, we then use the Distributed Real-time Protocol (DRP) to provably provide end-to-end real-time guaran- tees for the communication between distributed applications over a multi-hop wireless network. By establishing a set of contracts at run-time, DRP ensures that all messages reaching their destination meet their hard deadline. To demon- strate this, we implement the BLINK scheduler directly on the AP and adapt the LWB round structure to use DRP as a control layer protocol. We show that our system is capable of supporting several hundred simultaneous streams and can respond to requests in maximally 3 stream periods over up to 10 hops.
@phdthesis{biri_unleashing_2017,
type = {Semester {Thesis}},
title = {Unleashing the potential of {Real}-time {Internet} of {Things}},
copyright = {http://rightsstatements.org/page/InC-NC/1.0/},
url = {https://www.research-collection.ethz.ch/handle/20.500.11850/234913},
abstract = {With the recent surge in the interest for the Internet of Things (IoT) and an increased deployment of cyber-physical systems (CPS) in commercial and indus- trial applications, distributed systems have gained a significance influence on modern civilization and are performing increasingly complex tasks. Building such platforms in a reliable manner is challenging, as they include concurrent tasks on the application and the communication layers. As the majority of such devices features a single processor, tasked with both communicating over the network as well as sensing and computing, real-time scheduling conflicts arise as the resource separation of the applications in software is difficult to manage. To achieve such independence, we propose a platform consisting of dedicated application (AP) and communication (CP) processors which are completely de- coupled in terms of resource access, clock speeds and power management using BOLT. Leveraging this hardware separation, we then use the Distributed Real-time Protocol (DRP) to provably provide end-to-end real-time guaran- tees for the communication between distributed applications over a multi-hop wireless network. By establishing a set of contracts at run-time, DRP ensures that all messages reaching their destination meet their hard deadline. To demon- strate this, we implement the BLINK scheduler directly on the AP and adapt the LWB round structure to use DRP as a control layer protocol. We show that our system is capable of supporting several hundred simultaneous streams and can respond to requests in maximally 3 stream periods over up to 10 hops.},
language = {en},
urldate = {2018-02-12},
school = {ETH Zurich},
author = {Biri, Andreas},
month = dec,
year = {2017},
doi = {10.3929/ethz-b-000234913}
}
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