WIP: Exploring DSME MAC for LoRa – A System Integration and First Evaluation

Álamos, José; Kietzmann, Peter; Schmidt, Thomas C.; Wählisch, Matthias

doi:10.1109/wowmom54355.2022.00050

Cited by 2 publications

(2 citation statements)

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“…openDSME [27]. The open access DSME implementation for 802.15.4 radios was ported to RIOT by Alamos et al [3] who also developed an adaptation layer for LoRa (DSME-LoRa in Figure 4). Their code is publicly available, albeit not on RIOT upstream.…”

Section: System Setupmentioning

confidence: 99%

“…Contention-based [35,45] and scheduled MAC layers [24,26,58,61] for LoRa indicate performance improvements compared to LoRaWAN. Alamos et al [2,3] re-utilize IEEE 802.15.4e DSME (Deterministic and Synchronous Multi-Channel Extension) [25] to coordinate LoRa radios, with few modifications to the radio configuration. Fixed time-slotted DSME paired with low data rates increases latencies even further, though.…”

Section: Related Workmentioning

confidence: 99%

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Delay-tolerant ICN and its application to LoRa

Kietzmann

Álamos

Kutscher

et al. 2022

Proceedings of the 9th ACM Conference on Information-Centric Networking

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Connecting long-range wireless networks to the Internet imposes challenges due to vastly longer round-trip-times (RTTs). In this paper, we present an ICN protocol framework that enables robust and efficient delay-tolerant communication to edge networks. Our approach provides ICN-idiomatic communication between networks with vastly different RTTs. We applied this framework to LoRa, enabling end-to-end consumer-to-LoRa-producer interaction over an ICN-Internet and asynchronous data production in the LoRa edge. Instead of using LoRaWAN, we implemented an IEEE 802.15.4e DSME MAC layer on top of the LoRa PHY and ICN protocol mechanisms in RIOT OS. Executed on off-the-shelf IoT hardware, we provide a comparative evaluation for basic NDN-style ICN [60], RICE [31]-like pulling, and reflexive forwarding [46]. This is the first practical evaluation of ICN over LoRa using a reliable MAC. Our results show that periodic polling in NDN works inefficiently when facing long and differing RTTs. RICE reduces polling overhead and exploits gateway knowledge, without violating ICN principles. Reflexive forwarding reflects sporadic data generation naturally. Combined with a local data push, it operates efficiently and enables lifetimes of >1 year for battery powered LoRa-ICN nodes. CCS CONCEPTS• Networks → Network design principles; Wireless access points, base stations and infrastructure; Link-layer protocols.

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Section: System Setupmentioning

confidence: 99%