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Introduction
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January 2014 - May 2014
September 2010 - October 2015
September 2010 - May 2016
Publications
Publications (32)
The single-chip micro-mote (SC
$\mu \text{M}$
) is a
$2\times 3$
mm
<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>
single-chip crystal-free mote-on-chip. SC
$\mu \text{M}$
implements the IEEE802.15.4 and BLE standards and can communicate with off-the-shelf radios compliant to those standar...
The Single Chip Micro Mote (SCμM) is a crystal-free single-chip mote that brings us one step closer to the Smart Dust vision, in particular as it can communicate with off-the-shelf IEEE802.15.4 and Bluetooth Low Energy devices. However, before it can be part of such networks, the crystal-free SCμM chip needs to be able to accurately tune its commun...
6TiSCH is a standardization group within the Internet Engineering Task Force (IETF) that works on IPv6‐enabled Time‐slotted Channel Hopping (TSCH) networks. The 6TiSCH protocol stack, designed by the standardizationwork at the IETF, has direct applicability to low‐power Internet of Things (IoT) use cases, including smart factory, building, infrastr...
Tens of thousands of wireless industrial monitoring deployments exist today, logging more than 18 billion operating hours. These solutions have been around for over a decade and are based on standards such as WirelessHART and ISA100.11a to provide performance guarantees to the applications. The new trend in industry deployments is the convergence o...
We report the first time-synchronized protocol stack running on a crystal-free device. We use an early prototype of the Single-Chip micro Mote, SCμM, a single-chip 2 × 3 mm² mote-on-a-chip, which features an ARM Cortex-M0 micro-controller and an IEEE802.15.4 radio. This prototype consists of an FPGA version of the micro-controller, connected to the...
We report the first time-synchronized protocol stack running on a crystal-free device. We use an early prototype of the Single-Chip micro Mote, SCµM, a single-chip 2×3 mm 2 mote-on-a-chip, which features an ARM Cortex-M0 micro-controller and an IEEE802.15.4 radio. This prototype consists of a FPGA version of the micro-controller, connected to the S...
The IETF IPv6 over the TSCH mode of IEEE802.15.4e (6TiSCH) working group has standardized a set of protocols to enable low power industrial-grade IPv6 networks. 6TiSCH proposes a protocol stack rooted in the Time Slotted Channel Hopping (TSCH) mode of the IEEE802.15.4-2015 standard, supports multi-hop topologies with the IPv6 Routing Protocol for L...
The convergence of operational and information technologies in the industry requires a new generation of IP-compliant communication protocols that can meet the industrial performance requirements while facilitating the integration with novel web-based supervisory control and data acquisition (SCADA) systems. For more than a decade, the industry has...
IEEE802.15.4g is a low-power wireless standard initially designed for Smart Utility Networks, i.e., for connecting smart meters. IEEE802.15.4g operates at sub-GHz frequencies to offer 2–3× longer communication range compared to its 2.4 GHz counterpart. Although the standard offers 3 PHYs (Frequncy Shift Keying, Orthogonal Frequency Division Multipl...
Constructive Interference (CI) can happen when multiple wireless devices send the same frame at the same time. If the time offset between the transmissions is less than 500 ns, a receiver will successfully decode the frame with high probability. CI can be useful for achieving low-latency communication or low-overhead flooding in a multi-hop low-pow...
F-Interop allows implementors of IoT protocols to test compliance and interoperability of their implementation by connecting to a remote server in the cloud which contains and runs testing tools for different IoT standards. This paper provides an overview of the F-Interop Platform and the tools. Nowadays testing tools for CoAP, 6TiSCH, OSCORE and L...
F-Interop allows implementors of IoT protocols to test compliance and interoperability of their implementation by connecting to a remote server in the cloud which contains and runs testing tools for different IoT standards. This paper provides an overview of the F-Interop Platform and the tools. Nowadays testing tools for CoAP, 6TiSCH, OS-CORE and...
The Internet Engineering Task Force 6TiSCH Working Group standardizes the protocol stack for the Industrial Internet of Things, which combines the industrial performance of IEEE802.15.4 time-slotted channel hopping (TSCH) with the addressability and Internet integration capabilities of Internet Protocol version 6. The 6top Protocol, which is part o...
The principal barrier to massive IoT technology adoption is the lack of interoperability and the resulting segmented nature of the IoT market. To cope with that the European Research Cluster on the Internet of Things (IERC), the International Telecommunication Union (ITU) and the European Telecommunication Standards Institute (ETSI) promote the dev...
This paper presents the OpenVisualizer Rover testbed, a simple, easy-to-deploy and cheap testbed for the Internet of Things (IoT). The OpenWSN project provides a free and pen-source implementation of a standards-compliant protocol stack for the IoT, as well as all the necessary network management and debugging tools. The network management software...
The IETF 6TiSCH working group is standardizing a low-power wireless protocol stack targeting the Industrial IoT. It recently introduced a distributed mode for scheduling a 6TiSCH network by introducing the 6top Protocol (6P). 6P allows neighbor nodes to locally negotiate to add/remove cells to one another. 6TiSCH differentiates this mechanism from...
Industrial low-power networks are becoming the nexus of operational technologies and the Internet thanks to the standardization of networking layer interfaces. One of the main promoters of this shift is the IETF 6TiSCH WG, which addresses network management and IP integration of time synchronized channel hopping (TSCH) networks as those developed b...
Since time division multiple access (TDMA) is employed to reduce power consumption, time synchronization is critically important for wireless sensor networks. Packet-based clock correction is one of main methods to maintain synchronization among nodes. However, in many real cases, such as industrial equipment monitoring and diagnosis, there is no n...
Time slotted channel hopping (TSCH) is the highly reliable and ultra-low power medium access control technology at the heart of the IEEE802.15.4e-2012 amendment to the IEEE802.15.4-2011 standard. TSCH networks are deterministic in nature; the actions that occur at each time slot are well known. This paper presents an energy consumption model of the...
