Powering the Internet of Things with RIOT: Why? How? What is RIOT?

The crucial importance of software platforms was highlighted by recent events both at the political level (e.g. renewed calls for digital data and operating system "sovereignty", following E. Snowden's revelations) and at the business level (e.g. Android generated a new industry worth tens of billions of euros yearly). In the Internet of Things, which is expected to generate business at very large scale, but also to threaten even more individual privacy, such aspects will be exacerbated. The need for an operating system like RIOT stems from this context, and this short article outlines RIOT's main non-technical aspects, as well as its key technical characteristics.Comment: 4 page

OLSR Trees: A Simple Clustering Mechanism for OLSR

International audienceThe main ad hoc routing protocols that were proposed generally provide only flat networks. However the Internet has always been of a hierarchical nature, for scalability and manageability reasons. This paper therefore introduces a simple mechanism providing dynamic clustering with OLSR, one of the MANET routing solutions, chosen for its ease of integration in the Internet infrastructure. This clustering can have many different applications. This work describes how it can be used to provide hierarchical routing with OLSR. However, it is not limited to this use

OLSR SCALING WITH HIERARCHICAL ROUTING AND DYNAMIC TREE CLUSTERING

International audienceThe Internet uses hierarchical networking, for scalability and manageability reasons. However the main ad hoc routing solutions (OLSR, AODV, DSR, TBRPF) only provide flat networking, and generally suffer important scalability issues. This paper therefore introduces a simple mechanism providing dynamic clustering with OLSR, one of the MANET routing solutions, chosen for its easy integration in the Internet infrastructure. The paper then describes how this dynamic clustering can be used to provide MANET hierarchical networking with OLSR

Flooding Techniques in Mobile Ad Hoc Networks

Scarce bandwidth and interferences in mobile ad-hoc networks yield the need for more efficient flooding techniques than these used on usual wired networks. In this paper, we compare some new flooding mechanisms that were proposed. We namely present multi-point relay (MPR) flooding and gateway flooding. We investigate the matter theoretically via mathematical modelling, as well as practically via simulations. It is shown that when the network is dense, more than 2/3 of the gateway nodes participate in the retransmissions, while on the other hand the density of multi-point relay retransmitters is 1/nu , where nu is the node density

Towards Scalable MANETs

International audienceIn the near-future, self-organized networking is expected to become an important component in ITS, and in the Internet architecture in general. An essential challenge concerning the integration of this new component is the accomplishment of scalable and efficient mobile ad hoc routing. This paper overviews considerations relative to the design of such MANET protocols inside the framework provided by the IETF, stating the need for new hybrid protocols and architecture which offer a gradual transition from "traditional" MANET routing towards scalable MANET routing integrated in the Internet. This paper also proposes a tentative solution in this domain: DHT-OLSR, based on OLSR enhanced with dynamic clustering and distributed hash table routing

Old Wine in New Skins? Revisiting the Software Architecture for IP Network Stacks on Constrained IoT Devices

In this paper, we argue that existing concepts for the design and implementation of network stacks for constrained devices do not comply with the requirements of current and upcoming Internet of Things (IoT) use cases. The IoT requires not only a lightweight but also a modular network stack, based on standards. We discuss functional and non-functional requirements for the software architecture of the network stack on constrained IoT devices. Then, revisiting concepts from the early Internet as well as current implementations, we propose a future-proof alternative to existing IoT network stack architectures, and provide an initial evaluation of this proposal based on its implementation running on top of state-of-the-art IoT operating system and hardware.Comment: 6 pages, 2 figures and table

A Simple Address Autoconfiguration Mechanism for OLSR

International audienceIn this paper, we develop a simple autoconfiguration mechanism for OLSR networks. The mechanism aims at solving the simple, but common, probem of one or more new nodes emerging in an existing network. We propose a simple solution, which allows these new nodes to acquire an address and participate in the network. Our method is simple, both algorithmically and in the requirements to the network. While we recognize that this is a partial solution to the general autoconfiguration problem, we argue that the mechanism described in this paper will satisfy the requirements from a great number of real-world situations

Information Centric Networking in the IoT: Experiments with NDN in the Wild

This paper explores the feasibility, advantages, and challenges of an ICN-based approach in the Internet of Things. We report on the first NDN experiments in a life-size IoT deployment, spread over tens of rooms on several floors of a building. Based on the insights gained with these experiments, the paper analyses the shortcomings of CCN applied to IoT. Several interoperable CCN enhancements are then proposed and evaluated. We significantly decreased control traffic (i.e., interest messages) and leverage data path and caching to match IoT requirements in terms of energy and bandwidth constraints. Our optimizations increase content availability in case of IoT nodes with intermittent activity. This paper also provides the first experimental comparison of CCN with the common IoT standards 6LoWPAN/RPL/UDP.Comment: 10 pages, 10 figures and tables, ACM ICN-2014 conferenc