Mina Rady

• Research Engineer at Atomic Energy and Alternative Energies Commission

In 1794, French Engineer Claude Chappe coordinated the deployment of a network of dozens of optical semaphores. These formed “strings” that were hundreds of kilometers long, allowing for nationwide telegraphy. The Chappe telegraph inspired future developments of long-range telecommunications using electrical telegraphs and, later, digital telecommu...

In this article, we propose a routing mechanism based on the RPL protocol in a wireless network that is equipped with a mix of short‐range and long‐range radios. We introduce Life‐OF, an objective function for RPL which uses a combination of metrics and the diverse physical layers to boost the network's lifetime. We evaluate the performance of Life...

This thesis contributes to the emerging field of agile multi-PHY wireless networking. Industrial wireless networks have relied on a single physical layer for their operation. One example is the standardized IETF 6TiSCH protocol stack for industrial wireless networking, which uses IEEE 802.15.4 O-QPSK radio in the 2.4 GHz band as its physical layer....

Wireless networks traditionally use a single physical layer for communication: some use high bit-rate short-range radios, others low bit-rate long-range radios. This article introduces g6TiSCH, a generalization of the standards-based IETF 6TiSCH protocol stack. g6TiSCH allows nodes equipped with multiple radios to dynamically switch between them on...

New radio chips implement different physical layers, allowing firmware to change modulation, datarate and frequency dynamically. This technological development is an opportunity for industrial low-power wireless networks to offer even higher determinism, including latency predictability. This article introduces 6DYN, an extension to the IETF 6TiSCH...

Low-power wireless applications require different trade-off points between latency, reliability, data rate and power consumption. Given such a set of constraints, which physical layer should I be using? We study this question in the context of 6TiSCH, a state-of-the-art recently standardized protocol stack developed for harsh industrial application...

This demo presents a room-level localization solution built on top of the market leading SmartMesh IP industrial low-power wireless mesh network. Without any changes to the hardware or protocol stack of that product, we re-purpose Blink-a feature designed to allow for mobile nodes-for localization. We demonstrate how we can deploy the resulting loc...

As low‐power wide‐area network (LPWAN) end devices (EDs) are deployed in massive scale, their economic and environmental costs of operation are becoming too significant to ignore and too difficult to estimate. While LPWAN architectures and protocols are designed to primarily save energy, this study shows that energy saving does not necessarily lead...

In this paper, we tackle the design issue of optimal deployment of low power wide area network(LPWAN) IoT gateways(GWs). We classify GW deployment problem into two different categories, i.e., network spatial topology (NST) aware and NST-agnostic. In NST-aware GW deployment, precise location of IoT end devices (EDs) is known and thus the design ques...

Access to information is critical during population uprisings against repressive regimes. As a venue for information and data exchange, cyberspace offers many powerful social platforms for exchange of information. But the infrastructure of the Internet allows government to block or censor such platforms. In turn, anonymity networks emerged as conve...