| 1. |
- Al Nahas, Beshr, 1985, et al.
(författare)
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Competition: Aggressive synchronous transmissions with in-network processing for dependable all-to-all communication
- 2018
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Ingår i: International Conference on Embedded Wireless Systems and Networks. - 2562-2331. ; , s. 209-210
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Konferensbidrag (refereegranskat)abstract
- Low-power wireless networking needs to survive interference in order to accommodate the requirements of serious applications of the Internet of Things. Synchronous transmission techniques like Glossy and Chaos perform well under normal operating conditions. However, their data delivery latency suffers under interference even when extended to use channel hopping. In this paper, we discuss our techniques to enhance the robustness of synchronous flooding while keeping the latency and power consumption minimal and how to collect data from multiple sources to multiple destinations.
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| 2. |
- Al Nahas, Beshr, 1985, et al.
(författare)
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Competition: Towards Low-Latency, Low-Power Wireless Networking Under Interference
- 2016
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Ingår i: International Conference on Embedded Wireless Systems and Networks. - 2562-2331. ; 2016, s. 287-288
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Konferensbidrag (refereegranskat)abstract
- Low latency reliable data delivery is a key challenge for mission critical applications in the Industrial Internet of Things. Chaos was shown to perform well under normal operating conditions. In this paper we discuss some techniques to enhance its robustness under strong interference.
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| 3. |
- Al Nahas, Beshr, 1985, et al.
(författare)
-
Competition: Towards Low-Power Wireless Networking that Survives Interference with Minimal Latency
- 2017
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Ingår i: International Conference on Embedded Wireless Systems and Networks. - 2562-2331. ; 2017, s. 268-269
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Konferensbidrag (refereegranskat)abstract
- Low-power wireless networking needs to survive interference in order to accommodate the requirements of serious applications of Internet of Things. Synchronous transmission techniques like Glossy and Chaos perform well under normal operating conditions. However, their data delivery latency suffers under interference even when extended to use channel hopping. In this paper we discuss our techniques to enhance the robustness of synchronous flooding while keeping the latency and power consumption minimal.
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| 4. |
- Al Nahas, Beshr, 1985, et al.
(författare)
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Concurrent Transmissions for Multi-hop Bluetooth 5
- 2019
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Ingår i: International Conference on Embedded Wireless Systems and Networks. - 2562-2331. ; , s. 130-141
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Konferensbidrag (refereegranskat)abstract
- Bluetooth is an omnipresent communication technology, available on billions of connected devices today. While it has been traditionally limited to peer-to-peer and star network topology, the recent Bluetooth 5 standard introduces new operating modes to allow for increased reliability and Bluetooth Mesh supports multi-hop networking based on message flooding. In this paper, we present BlueFlood. It adapts concurrent transmissions, as introduced by Glossy, to Bluetooth. The result is fast and efficient network-wide data dissemination in multi-hop Bluetooth networks. Moreover, we show that BlueFlood floods can be reliably received by off-the-shelf Bluetooth devices such as smart phones, opening new applications of concurrent transmissions and seamless integration with existing technologies. We present an in-depth experimental feasibility study of concurrent transmissions over Bluetooth PHY in a controlled environment. Further, we build a small-scale testbed where we evaluate BlueFlood in real-world settings of a residential environment. We show that BlueFlood achieves 99% end-to-end delivery ratio in multi-hop networks with a duty cycle of 0.13% for 1-second intervals.
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| 5. |
- Harms, Laura, 1991
(författare)
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C-TSCH: A Centralized Scheduler for TSCH
- 2019
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Ingår i: International Conference on Embedded Wireless Systems and Networks. - 2562-2331. ; , s. 314-315
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Konferensbidrag (refereegranskat)abstract
- We present a centralized scheduler for reliable communications in low-power wireless TSCH networks. This scheduler enables us to introduce a novel centralized routing approach not dependent on existing distributed solutions like RPL.
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| 6. |
- Harms, Laura, 1991, et al.
(författare)
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Competition: Centrally Scheduled Low-Power Wireless Networking for Dependable Data Collection
- 2019
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Ingår i: International Conference on Embedded Wireless Systems and Networks. - 2562-2331. ; 2019, s. 300-301
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Konferensbidrag (refereegranskat)abstract
- For low-power wireless networks, it is important to survive interference to be usable for Industrial Internet-of-Things (IIoT) applications. Distributed flooding protocols like Glossy or Chaos have shown that they can meet the expectations of surviving interference and node failures. However, non-distributed, centralized schedulers are favorable for IIoT but are not used yet in these environments. In this paper, we explore the use of centralized schedulers for low-power wireless networks to achieve robustness in data collection applications.
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| 7. |
- Poirot, Valentin, 1994, et al.
(författare)
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Paxos Made Wireless: Consensus in the Air
- 2019
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Ingår i: International Conference on Embedded Wireless Systems and Networks. - 2562-2331. ; , s. 1-12
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Konferensbidrag (refereegranskat)abstract
- Many applications in low-power wireless networks require complex coordination between their members. Swarms of robots or sensors and actuators in industrial closed-loop control need to coordinate within short periods of time to execute tasks. Failing to agree on a common decision can cause substantial consequences, like system failures and threats to human life. Such applications require consensus algorithms to enable coordination. While consensus has been studied for wired networks decades ago, with, for example, Paxos and Raft, it remains an open problem in multi-hop low-power wireless networks due to the limited resources available and the high cost of established solutions. This paper presents Wireless Paxos, a fault-tolerant, network-wide consensus primitive for low-power wireless networks. It is a new flavor of Paxos, the most-used consensus protocol today, and is specifically designed to tackle the challenges of low-power wireless networks. By building on top of concurrent transmissions, it provides low-latency, high reliability, and guarantees on the consensus. Our results show that Wireless Paxos requires only 289 ms to complete a consensus between 188 nodes in testbed experiments. Furthermore, we show that Wireless Paxos stays consistent even when injecting controlled failures.
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| 8. |
- Poirot, Valentin, 1994, et al.
(författare)
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Poster: Learning to Shine - Optimizing Glossy at Runtime with Reinforcement Learning
- 2019
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Ingår i: International Conference on Embedded Wireless Systems and Networks. - 2562-2331. ; 2019, s. 226-227
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Konferensbidrag (refereegranskat)abstract
- Glossy is a dissemination protocol that allows a node to propagate information to the entire network through constructive interference. We present GLossAI, a new artificial intelligence-based version of Glossy. We use reinforcement learning to determine and update Glossy’s parameters at runtime. Each node individually learns the best strategy to minimize energy consumption while maintaining high reliability. Furthermore, nodes can dynamically adapt their parameters to follow the dynamics of the medium.
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| 9. |
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| 10. |
- Rathje, Patrick, et al.
(författare)
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Poster: Exposure notification at hand
- 2021
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Ingår i: International Conference on Embedded Wireless Systems and Networks. - 2562-2331. ; 2021
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Konferensbidrag (refereegranskat)abstract
- Contact tracing is a tool for controlling infectious disease outbreaks. To foster widespread adoption, established tracing protocols focus on smartphone users. As a result, user groups who cannot afford a compatible smartphone cannot carry it continuously are left out. This work introduces the Contact Tracing Wristband (CWB) and its integration into Google and Apple’s Exposure Notification protocol. The wristband’s low-cost and versatility bring tracing to additional users and thus enhance the efficacy of tracing.
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