Sergi Reñé

University College London

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Ioannis Psaras

University College London

George Pavlou

University College London

Onur Ascigil

University College London

Michał Król

City, University of London

Vasilis Sourlas

Institute of Communication and Computer Systems

ÓE

Óscar Esparza

Universitat Politècnica de Catalunya

José L. Muñoz

Universitat Politècnica de Catalunya

Carlos Gañán

Delft University of Technology

Konstantinos V. Katsaros

Institute of Communication and Computer Systems

Jorge Mata‐Díaz

Universitat Politècnica de Catalunya

Cooperative Institutions

University College London

Universitat Politècnica de Catalunya

Democritus University of Thrace

Aalborg University

City, University of London

Lancaster University

University College Lahore

UCL Australia

National Centre of Scientific Research "Demokritos"

University of Cambridge

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VSPLIT: A Cross-Layer Architecture for V2I TCP Services Over 802.11

Mobile Networks and Applications (2013)

Sergi Reñé Óscar Esparza Juanjo Alins Jorge Mata‐Díaz José L. Muñoz

Transport layer

10.1007/s11036-013-0473-8

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Citations (7)

Mobile Data Repositories at the Edge.

Ioannis Psaras Onur Ascigil Sergi Reñé George Pavlou Alexander Afanasyev

In a future IoT-dominated environment the majority of data will be produced at the edge, which may be moved to the network core. We argue that this reverses today’s “core-to-edge” data flow to an “edge-to-core” model and puts severe stress on edge access/cellular links. In this paper, we propose a data-centric communication approach which treats storage and wire the same as far as their ability to supply the requested data is concerned. Given that storage is cheaper to provide and scales better than wires, we argue for enhancing network connectivity with local storage services (e.g., in WiFi Access Points, or similar) at the edge of the network. Such local storage services can be used to buffer IoT and user-generated data at the edge, prior to data-cloud synchronization.

Edge device

Core network

Data access

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Citations (27)

Information-Centric Connectivity

arXiv (Cornell University) (2016)

Konstantinos V. Katsaros Vasilis Sourlas Ioannis Psaras Sergi Reñé George Pavlou

Mobile devices are often presented with multiple connectivity options usually making a selection either randomly or based on load/wireless conditions metrics, as is the case of current offloading schemes. In this paper we claim that link-layer connectivity can be associated with information-availability and in this respect connectivity decisions should be information-aware. This constitutes a next step for the Information-Centric Networking paradigm, realizing the concept of Information-Centric Connectivity (ICCON). We elaborate on different types of information availability and connectivity decisions in the context of ICCON, present specific use cases and discuss emerging opportunities, challenges and technical approaches. We illustrate the potential benefits of ICCON through preliminary simulation and numerical results in an example use case.

Information-Centric Networking

Source

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Data Availability Sampling in Ethereum: Analysis of P2P Networking Requirements

arXiv (Cornell University) (2023)

Michał Król Onur Ascigil Sergi Reñé Étienne Rivière Matthieu Pigaglio

Despite their increasing popularity, blockchains still suffer from severe scalability limitations. Recently, Ethereum proposed a novel approach to block validation based on Data Availability Sampling (DAS), that has the potential to improve its transaction per second rate by more than two orders of magnitude. DAS should also significantly reduce per-transaction validation costs. At the same time, DAS introduces new communication patterns in the Ethereum Peer-to-Peer (P2P) network. These drastically increase the amount of exchanged data and impose stringent latency objectives. In this paper, we review the new requirements for P2P networking associated with DAS, discuss open challenges, and identify new research directions.

Popularity

10.48550/arxiv.2306.11456

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Citations (3)

Information-Centric Connectivity

arXiv (Cornell University) (2016)

Konstantinos V. Katsaros Vasilis Sourlas Ioannis Psaras Sergi Reñé George Pavlou

Information-Centric Networking

10.48550/arxiv.1602.00566

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Connecting the Edges: A Universal, Mobile-Centric, and Opportunistic Communications Architecture

IEEE Communications Magazine (2018)

Christos-Alexandros Sarros Sotiris Diamantopoulos Sergi Reñé Ioannis Psaras Adisorn Lertsinsrubtavee

The Internet has crossed new frontiers with access to it getting faster and cheaper. Considering that the architectural foundations of today's Internet were laid more than three decades ago, the Internet has done remarkably well until today coping with the growing demand. However, the future Internet architecture is expected to support not only the ever growing number of users and devices, but also a diverse set of new applications and services. Departing from the traditional host-centric access paradigm, where access to a desired content is mapped to its location, an information-centric model enables the association of access to a desired content with the content itself, irrespective of the location where it is being held. UMOBILE tailors the information-centric communication model to meet the requirements of opportunistic communications, integrating those connectivity approaches into a single architecture. By pushing services near the edge of the network, such an architecture can pervasively operate in any networking environment and allows for the development of innovative applications, providing access to data independent of the level of end-to-end connectivity availability.

Information-Centric Networking

Database-centric architecture

10.1109/mcom.2018.1700325

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Citations (19)

Rewarding device-to-device content dissemination using Proof-of-Prestige

2021 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) (2019)

Michał Król Sergi Reñé Arnold Cheung Ioannis Psaras

This demo shows an implementation of a device-to-device data dissemination system for mobile phones. We develop and Android application allowing users to exchange content and collects rewards for transfers using Proof of Prestige scheme deployed on Ethereum blockchain. To interact with the system, mobile devices require to store uniquely their public and private keys reducing the memory footprint. Our implementation inherits blockchain security features and remains resistant to Sybil and collude attacks. We make our application available on Google Play Store for public use.

Prestige

Memory footprint

10.1109/bloc.2019.8751398

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Citations (0)

ChainSoft

Michał Król Sergi Reñé Onur Ascigil Ioannis Psaras

In recent years, more and more companies require dedicated software to increase the efficiency of their business. However, with rapidly changing technologies it is often inefficient to maintain a dedicated team of developers. On the other hand, outsourcing software development requires considerable effort and trust between involved parties to ensure the quality of the code and adequate payment.

10.1145/3211933.3211934

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Citations (18)

Analysis of Inter-RSU Beaconing Interference in VANETs

Lecture notes in computer science (2012)

Carlos Gañán Jonathan Loo Arindam Ghosh Óscar Esparza Sergi Reñé

10.1007/978-3-642-34976-8_5

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Citations (9)

Scalable Content-centric Routing for Hybrid ICN

Sergi Reñé George Pavlou Onur Ascigil

Hybrid Information-Centric Networking (hICN) is an incrementally-deployable information-centric networking architecture that is built on top of IPv6. In hICN, application-level identifiers are directly used to route interest packets (i.e., request for content) to fetch a copy of the desired content/data from any location. However, following the Internet Protocol conventions that require storing pre-computed routing/forwarding state for all prefixes in the routers raises scalability concerns, especially at the inter-domain level. Here we consider instead the other extreme; i.e. on-demand routing computation for content name prefixes when interest packets arrive at the router. Following this approach, we propose a centralized routing service within a domain that keeps a mapping between hICN name prefixes and locators (i.e., routable addresses) to hICN routers. Once a locator is received, an hICN router forwards an interest packet towards the intended destination using segment routing. We evaluated the proposed solution through a real testbed implementation in order to demonstrate that the performance is equivalent to typical hICN forwarding, while offering a scalability solution.

Policy-based routing

Testbed

Loose Source Routing

Source routing

10.1109/lanman58293.2023.10189421

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