Vlasios Tsiatsis

• University of California, Los Angeles

Internet of Things: Technologies and Applications for a New Age of Intelligence outlines the background and overall vision for the Internet of Things (IoT) and Cyber-Physical Systems (CPS), as well as associated emerging technologies. Key technologies are described including device communication and interactions, connectivity of devices to cloud-ba...

The Internet of Things (IoT) has moved beyond the hype, with promising applications materializing and industries transforming through digitalization as well as servitization—that is, delivering a service as an integral part of a product. Since the application spread in today’s IoT is wide and is typically structured in market-oriented groups, a sys...

Participatory Sensing (PS), also known as Urban, Citizen, or People-Centric Sensing, is a form of citizen engagement for the purpose of capturing the surrounding environment in a city as a first step for contributing to the solution of specific issues such as public health and well-being. Either citizens on their own initiative, or citizens organiz...

An IoT reference model serves as a description of main IoT system entities and their relationships. The most complete IoT reference model is the model from the IoT-A research project funded by the European Commission on which this chapter is based on. The model contains a set of sub-models such as the IoT domain, communication, information, functio...

Not for download, only for purchase at Amazon or Elsevier. This book outlines the background and overall vision for the Internet of Things (IoT) and Machine- to-Machine (M2M) communications and services, including major standards. Key technologies are described, and include everything from physical instrumentation of devices to the cloud infrastruc...

This book outlines the background and overall vision for the Internet of Things (IoT) and Machine-to-Machine (M2M) communications and services, including major standards. Key technologies are described, and include everything from physical instrumentation of devices to the cloud infrastructures used to collect data. Also included is how to derive i...

This paper briefly presents some of the aspects of the European 7th Framework Programme research project SENSEI architecture towards the Internet of Things.

The integration of the physical world into the digital world is an important requirement for a Future Internet, as an increasing number of services and applications are relying on real world information and interaction capabilities. Sensor and actuator networks (SAN) are the current means of interacting with the real world although most of the curr...

Radio duty cycling has received significant attention in sensor networking literature, particularly in the form of protocols for medium access control and topology management. While many protocols have claimed to achieve significant duty-cycling benefits in theory and simulation, these benefits have often not translated to practice. The dominant fa...

Networks of the future will contain a vast array of sensors and actuators which users will wish to interact with. Orchestrating this task effectively and efficiently will be one of the major challenges facing the deployment of these future networks. We propose a three-tier architecture which provides a middleware to resolve high-level service reque...

Wireless sensor networking research has been mainly focused on internal wireless sensor network issues such as MAC and routing protocols, energy saving, HW design and to some extent on the architecture of gateways that connect a wireless sensor network with the rest of the world. Wireless sensor networks have been seen as dedicated to one task by o...

Wireless sensor networks promise fine-grain monitoring in a wide variety of environments. Many of these environments (e.g., indoor environments or habitats) can be harsh for wireless communication. From a networking perspective, the most basic ...

In wireless sensor networks, energy efficiency is crucial to achieve satisfactory network lifetime. In order to reduce the energy consumption of a node significantly, its radio needs to be turned off. Yet, some nodes have to participate in multi-hop packet forwarding. We tackle this issue by exploiting two degrees of freedom in topology management:...

In this paper we explore the network level architecture of distributed sensor systems that perform in-network processing. We propose a system with heterogeneous nodes that organizes into a hierarchical structure dictated by the computational capabilities. The presence of high-performance nodes amongst a sea of resource-constrained nodes exposes new...

Networks of wireless microsensors for monitoring physical environments have emerged as an important new application area for wireless technology. Key attributes of these new types of networked systems are the severely constrained computational and energy resources, and an ad hoc operational environment. This paper is a study of the communication se...

Networks of wireless microsensors for monitoring physical environments have emerged as an important new application area for wireless technology. Key attributes of these new types of networked systems are the severely constrained computational and energy resources, and an ad hoc operational environment. This paper is a study of the communication se...

In wireless sensor networks, where energy efficiency is the key design challenge, the energy consumption is typically dominated by the node's communication subsystem. It can only be reduced significantly by transitioning the embedded radio to a sleep state, at which point the node essentially retracts from the network topology. Existing topology ma...

In wireless sensor networks, energy efficiency is crucial to achieving satisfactory network lifetime. To reduce the energy consumption significantly, a node should turn off its radio most of the time, except when it has to participate in data forwarding. We propose a new technique, called sparse topology and energy management (STEM), which efficien...

Networks of wireless microsensors for monitoring physical environments have emerged as an important new application area for wireless technology. Key attributes of these new types of networked systems are the severely constrained computational and energy resources, and an ad hoc operational environment. This paper is a study of the communication se...

In wireless sensor networks, where energy efficiency is the key design challenge, the energy consumption is typically dominated by the node's communication subsystem. It can only be reduced significantly by transitioning the embedded radio to a sleep state, at which point the node essentially retracts from the network topology. Existing topology ma...

In wireless sensor networks, energy efficiency is crucial to achieve satisfactory network lifetime. In order to reduce the energy consumption of a node significantly, its radio needs to be turned off. Yet, some nodes have to participate in multi-hop packet forwarding. We tackle this issue by exploiting two degrees of freedom in topology management:...

The energy-efficient communication among wireless sensor nodes determines the lifetime of a sensor network and exhibits patterns highly dependable on the sensor application and networking software. This software is responsible for processing the sensor data and disseminating the data to other nodes or a central repository. In this paper we propose...

The energy-efficient communication among wireless sensor nodes determines the lifetime of a sensor network and exhibits patterns highly dependable on the sensor application and networking software. This software is responsible for processing the sensor data and disseminating the data to other nodes or a central repository. In this paper we propose...

In this paper we present our view of sensor and actuator networks, how we position them relative to the network of the future and what support such networks would both bring to and require from the existing and future core network. We put a special emphasis on the support infrastructure, and describe our envisioned architecture for a future ubiquit...