A wireless technology assessment for reliable communication in aircraft

2016 IEEE International Conference on Communications Workshops (ICC)

et al. 2016

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Abstract-In this paper we present the effects of Wi-Fi interference on a Wireless Sensor Network (WSN) in an aircraft. We use Time-Slotted Channel Hopping (IEEE 802.15.4e) as Link layer in the WSN network. We conduct measurements in an environment realistically representing an aircraft cabin. We provide the resulting application failure and packet drop rates with and without interference, for an exemplary deadline critical application. In order to outline the importance of hopping against interference in a controlled environment, we compare the results of individual channels, full channel hopping and clear channel hopping, where the TSCH only hops over channels free from WiFi interference. Results open further discussions for more sophisticated Link layer implementations resulting in increased reliability such as optimization of frequency allocation depending on the application deadline.

Section: Whitening Optimizationmentioning

confidence: 99%

Section: Reliability Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reliable co-existence of 802.15.4e TSCH-based WSN and Wi-Fi in an aircraft cabin

2016 IEEE International Conference on Communications Workshops (ICC)

et al. 2016

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“…From the perspective of delay-constrained reliable applications, the coexistence of several technologies in the same spectrum creates a serious issue [2]. One particular example for coexistence is the future on-board aircraft communication, where wires will be eliminated in favor of wireless links.…”

Section: Introductionmentioning

confidence: 99%

Reliable hopping sequence design for highly interfered wireless sensor networks

2017 IEEE International Symposium on Local and Metropolitan Area Networks (LANMAN)

et al. 2017

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Abstract-Guaranteeing reliability in highly interfered environments is a challenging requirement of current and future wireless applications. A promising state-of-the-art solution for low-power wireless technologies, e.g., wireless sensor networks (WSNs), is frequency hopping aided with black-and white-listing of channels. Both methods, although increase reliability, sacrifice frequency resources. Extensive measurements of channels' packet drop probabilities show that interfered channels are not fully blocked. Motivated by this discovery, we propose the whitening -a methodology for reliable hopping sequence design without resource sacrifice. We model the efficiency of interfered ISM band channels, and study the gains and trade-offs of applying whitening in different scenarios. Application reliability is achieved by granting re-transmissions within a time deadline. Simulations and measurements, performed on the exemplary use case of Time Slotted Channel Hopping WSNs, show that the proposed methods outperform state-of-the-art solutions in the presence of interference in terms of reliability.

“…The new focus has been adopted by 5G wireless technology vision in a concept of ultra-low-latency and ultra-high-reliability communication [7]. On the other hand, WSN are inherently unreliable, since they operate in the unlicensed frequency spectrum, and interfere with other wireless technologies [8].…”

mentioning

confidence: 99%

Time Slotted Channel Hopping for smart metering: Measurements and analysis of medium access

2016 IEEE International Conference on Smart Grid Communications (SmartGridComm)

et al. 2016

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Abstract-The paper presents an indoor testbed evaluation of a multi-hop IEEE 802.15.4e Time Slotted Channel Hopping (TSCH) sensor network, operating in 2.4 GHz band. First goal of the evaluation is to assess the perspectives of TSCH, as a more reliable version of IEEE 802.15.4, for meter reading applications in a Smart Grid. Secondly, we compare the network performance for two medium access schemes: contention-based and contention-free. We model two automatic meter reading applications, representing regular metering readings and alarm reporting. With this model, we have collected eight measurement data sets for different interference and load conditions. Based on the data sets, link-and end-to-end reliability, and end-to-end delay are analyzed. Our results point out that the delay constraints can be satisfied. However, channel hopping is insufficient for meeting the reliability requirements, and additional mechanisms to couple with high link-layer losses are required.