Constantinos Marios Angelopoulos

article

Crowdcloud: a crowdsourced system for cloud infrastructure

Mahmood Hosseini, Constantinos Marios Angelopoulos, Wei Koong Chai, Stephane Kundig

Cluster Computing > 2019 > 22 > 2 > 455-470

The widespread adoption of truly portable, smart devices and Do-It-Yourself computing platforms by the general public has enabled the rise of new network and system paradigms. This abundance of well-connected, well-equipped, affordable devices, when combined with crowdsourcing methods, enables the development of systems with the aid of the crowd. In this work, we introduce the paradigm of Crowdsourced Systems...

chapter

Coverage-Adaptive Random Walks for Fast Sensory Data Collection

Constantinos-Marios Angelopoulos, Sotiris Nikoletseas, Dimitra Patroumpa, Jose Rolim

Lecture Notes in Computer Science > Ad-Hoc, Mobile and Wireless Networks > 81-94

Random walks in wireless sensor networks can serve as fully local, very simple strategies for sink motion that significantly reduce energy dissipation a lot but increase the latency of data collection. To achieve satisfactory energy-latency trade-offs the sink walks can be made adaptive, depending on network parameters such as density and/or history of past visits in each network region; but this...

chapter

Towards a holistic federation of secure crowd-enabled IoT facilities

Constantinos Marios Angelopoulos, Gabriel Filiosy, Sotiris Nikoletseas, Theofanis P. Raptis, more

2015 IEEE International Conference on Communications (ICC) > 555 - 560

ICC 2015 - 2015 IEEE International Conference on Communications

Experimentally driven research is considered to be a key factor for growing the Internet industry. There is a large number of existing experimentation facilities which can be adapted to a seamless federation into a unified platform. Through this common federation, innovative experiments become possible and are able to break the boundaries of testbeds interoperability barriers. This way, infrastructure...

chapter

A user-enabled testbed architecture with mobile crowdsensing support for smart, green buildings

Constantinos Marios Angelopoulos, Orestis Evangelatos, Sotiris Nikoletseas, Theofanis P. Raptis, more

2015 IEEE International Conference on Communications (ICC) > 573 - 578

ICC 2015 - 2015 IEEE International Conference on Communications

We present an IoT testbed architecture for Smart Buildings that enables the seamless and scalable integration of crowd-sourced resources such as smartphones and tablets. The purpose of this integration is dual. First, the embedded sensory capabilities of the resources provided by the crowd are combined with the sensing capabilities of the building for efficient smart actuations. Second, the system...

article

Design and evaluation of characteristic incentive mechanisms in Mobile Crowdsensing Systems

Constantinos Marios Angelopoulos, Sotiris Nikoletseas, Theofanis P. Raptis, José Rolim

Simulation Modelling Practice and Theory > 2015 > 55 > Complete > 95-106

In this paper we identify basic design issues of Mobile Crowdsensing Systems and investigate some characteristic challenges. We define the basic components of an MCS – the Task, the Server and the Crowd – and investigate the functions describing/governing their interactions. We identify three qualitatively different types of Tasks; (a) those whose added utility is proportional to the size of the Task,...

chapter

IoT Lab: Towards co-design and IoT solution testing using the crowd

Joao Fernandes, M. Nati, N. S. Loumis, Sotiris Nikoletseas, more

2015 International Conference on Recent Advances in Internet of Things (RIoT) > 1 - 6

2015 International Conference on Recent Advances in Internet of Things (RIoT)

IoT Lab is a European funded project researching the potential of crowdsourcing as an extension to the traditional IoT testbed infrastructures. The project proposes an innovative co-design, implementation and testing of solutions with the close involvement of the crowd in the process. Through the use of a smart phone application the crowd can participate in experiments by contributing with sensory...

chapter

Characteristic utilities, join policies and efficient incentives in Mobile Crowdsensing Systems

Constantinos Marios Angelopoulos, Sotiris Nikoletseas, Theofanis P. Raptis, Jose D. P. Rolim

2014 IFIP Wireless Days (WD) > 1 - 6

2014 Wireless Days (WD)

In this paper we identify basic design issues of Mobile Crowdsensing Systems (MCS) and investigate some characteristic challenges. We define the basic components of an MCS - the Task, the Server and the Crowd - and investigate the functions describing/governing their interactions. We identify three qualitatively different types of Tasks; a) those whose added utility is proportional to the size of...

article

Wireless energy transfer in sensor networks with adaptive, limited knowledge protocols

Constantinos Marios Angelopoulos, Sotiris Nikoletseas, Theofanis P. Raptis

Computer Networks > 2014 > 70 > Complete > 113-141

We investigate the problem of efficient wireless energy transfer in Wireless Rechargeable Sensor Networks (WRSNs). In such networks a special mobile entity (called the Mobile Charger) traverses the network and wirelessly replenishes the energy of sensor nodes. In contrast to most current approaches, we envision methods that are distributed, adaptive and use limited network information. We propose...

chapter

A holistic IPv6 test-bed for smart, green buildings

Constantinos Marios Angelopoulos, Gabriel Filios, Sotiris Nikoletseas, Dimitra Patroumpa, more

2013 IEEE International Conference on Communications (ICC) > 6050 - 6054

ICC 2013 - 2013 IEEE International Conference on Communications

This work addresses networked embedded systems enabling the seamless interconnection of smart building automations to the Internet and their abstractions as web services. In our approach, such abstractions are used to primarily create a flexible, holistic and scalable system and allow external end-users to compose and run their own smart/green building automation application services on top of this...

chapter

Efficient Wireless Recharging in Sensor Networks

Constantinos Marios Angelopoulos, Sotiris Nikoletseas, Theofanis P. Raptis

2013 IEEE International Conference on Distributed Computing in Sensor Systems > 298 - 300

2013 IEEE International Conference on Distributed Computing in Sensor Systems (DCOSS)

We investigate the problem of efficient wireless energy recharging in Wireless Rechargeable Sensor Networks (WRSNs). In such networks a special mobile entity (called the Mobile Charger) traverses the network and wirelessly replenishes the energy of sensor nodes. In contrast to most current approaches, we envision methods that are distributed, adaptive and use limited network information. We propose...

article

Aggregated mobility-based topology inference for fast sensor data collection

Constantinos Marios Angelopoulos, Sotiris Nikoletseas

Computer Communications > 2011 > 34 > 13 > 1570-1579

We investigate the problem of efficient data collection in wireless sensor networks where both the sensors and the sink move. We especially study the important, realistic case where the spatial distribution of sensors is non-uniform and their mobility is diverse and dynamic. The basic idea of our protocol is for the sink to benefit of the local information that sensors spread in the network as they...

chapter

Work-in-progress: A new random walk for data collection in sensor networks

Constantinos Marios Angelopoulos, Sotiris Nikoletseas, Dimitra Patroumpa, Christoforos Raptopoulos

2011 International Conference on Distributed Computing in Sensor Systems and Workshops (DCOSS) > 1 - 3

2011 International Conference on Distributed Computing in Sensor Systems (DCOSS)

Motivated by the problem of efficient sensor network data collection via a mobile sink, we present undergoing research in accelerated random walks on Random Geometric Graphs. We first propose a new type of random walk, called the α-stretched random walk, and compare it to three known random walks. We also define a novel performance metric called Proximity Cover Time which, along with other metrics...

chapter

Experimental evaluation of energy balance algorithms in the SenseWALL sensor network test-bed

Constantinos Marios Angelopoulos, Dionysios Efstathiou, Sotiris Nikoletseas

2011 International Conference on Distributed Computing in Sensor Systems and Workshops (DCOSS) > 1 - 6

2011 International Conference on Distributed Computing in Sensor Systems (DCOSS)

We present key aspects (hardware, software, topology, networking) of SenseWall, an experimental sensor network test-bed we have created for the implementation and engineering of distributed sensor network algorithms. We then describe how SenseWall has been in particular used to implement two recent state of the art algorithms for energy balanced sensor data propagation. We elaborate on the issues...

article

Accelerated collection of sensor data by mobility-enabled topology ranks

Constantinos Marios Angelopoulos, Sotiris Nikoletseas

The Journal of Systems & Software > 2010 > 83 > 12 > 2471-2477

We study the problem of fast and energy-efficient data collection of sensory data using a mobile sink, in wireless sensor networks in which both the sensors and the sink move. Motivated by relevant applications, we focus on dynamic sensory mobility and heterogeneous sensor placement. Our approach basically suggests to exploit the sensor motion to adaptively propagate information based on local conditions...

INFONA - science communication portal

Search results for: Constantinos Marios Angelopoulos

Crowdcloud: a crowdsourced system for cloud infrastructure

Coverage-Adaptive Random Walks for Fast Sensory Data Collection

Towards a holistic federation of secure crowd-enabled IoT facilities

A user-enabled testbed architecture with mobile crowdsensing support for smart, green buildings

Design and evaluation of characteristic incentive mechanisms in Mobile Crowdsensing Systems

IoT Lab: Towards co-design and IoT solution testing using the crowd

Characteristic utilities, join policies and efficient incentives in Mobile Crowdsensing Systems

Wireless energy transfer in sensor networks with adaptive, limited knowledge protocols

A holistic IPv6 test-bed for smart, green buildings

Efficient Wireless Recharging in Sensor Networks

Aggregated mobility-based topology inference for fast sensor data collection

Work-in-progress: A new random walk for data collection in sensor networks

Experimental evaluation of energy balance algorithms in the SenseWALL sensor network test-bed

Accelerated collection of sensor data by mobility-enabled topology ranks

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