30 research outputs found
The Road Ahead for Networking: A Survey on ICN-IP Coexistence Solutions
In recent years, the current Internet has experienced an unexpected paradigm
shift in the usage model, which has pushed researchers towards the design of
the Information-Centric Networking (ICN) paradigm as a possible replacement of
the existing architecture. Even though both Academia and Industry have
investigated the feasibility and effectiveness of ICN, achieving the complete
replacement of the Internet Protocol (IP) is a challenging task.
Some research groups have already addressed the coexistence by designing
their own architectures, but none of those is the final solution to move
towards the future Internet considering the unaltered state of the networking.
To design such architecture, the research community needs now a comprehensive
overview of the existing solutions that have so far addressed the coexistence.
The purpose of this paper is to reach this goal by providing the first
comprehensive survey and classification of the coexistence architectures
according to their features (i.e., deployment approach, deployment scenarios,
addressed coexistence requirements and architecture or technology used) and
evaluation parameters (i.e., challenges emerging during the deployment and the
runtime behaviour of an architecture). We believe that this paper will finally
fill the gap required for moving towards the design of the final coexistence
architecture.Comment: 23 pages, 16 figures, 3 table
Scalable bloom-filter based content dissemination in community networks using information centric principles
Information-Centric Networking (ICN) is a new communication paradigm that shifts the focus from content location to content objects themselves. Users request the content by its name or some other form of identifier. Then, the network is responsible for locating the requested content and sending it to the users. Despite a large number of works on ICN in recent years, the problem of scalability of ICN systems has not been studied and addressed adequately. This is especially true when considering real-world deployments and the so-called alternative networks such as community networks. In this work, we explore the applicability of ICN principles in the challenging and unpredictable environments of community networks. In particular, we focus on stateless content dissemination based on Bloom filters (BFs). We highlight the scalability limitations of the classical single-stage BF based approach and argue that by enabling multiple BF stages would lead to performance enhancements. That is, a multi-stage BF based content dissemination mechanism could support large network topologies with heterogeneous traffic and diverse channel conditions. In addition to scalability improvements, this approach also is more secure with regard to Denial of Service attacks
Incrementando as redes centradas à informaçãopara uma internet das coisas baseada em nomes
The way we use the Internet has been evolving since its origins. Nowadays,
users are more interested in accessing contents and services with high demands
in terms of bandwidth, security and mobility. This evolution has triggered
the emergence of novel networking architectures targeting current, as
well as future, utilisation demands. Information-Centric Networking (ICN) is a
prominent example of these novel architectures that moves away from the current
host-centric communications and centres its networking functions around
content.
Parallel to this, new utilisation scenarios in which smart devices interact with
one another, as well as with other networked elements, have emerged to constitute
what we know as the Internet of Things (IoT). IoT is expected to have
a significant impact on both the economy and society. However, fostering the
widespread adoption of IoT requires many challenges to be overcome. Despite
recent developments, several issues concerning the deployment of IPbased
IoT solutions on a large scale are still open.
The fact that IoT is focused on data and information rather than on point-topoint
communications suggests the adoption of solutions relying on ICN architectures.
In this context, this work explores the ground concepts of ICN
to develop a comprehensive vision of the principal requirements that should
be met by an IoT-oriented ICN architecture. This vision is complemented with
solutions to fundamental issues for the adoption of an ICN-based IoT. First,
to ensure the freshness of the information while retaining the advantages of
ICN’s in-network caching mechanisms. Second, to enable discovery functionalities
in both local and large-scale domains. The proposed mechanisms are
evaluated through both simulation and prototyping approaches, with results
showcasing the feasibility of their adoption. Moreover, the outcomes of this
work contribute to the development of new compelling concepts towards a
full-fledged Named Network of Things.A forma como usamos a Internet tem vindo a evoluir desde a sua criação.
Atualmente, os utilizadores estão mais interessados em aceder a conteúdos
e serviços, com elevados requisitos em termos de largura de banda, segurança
e mobilidade. Esta evolução desencadeou o desenvolvimento de novas
arquiteturas de rede, visando os atuais, bem como os futuros, requisitos de
utilização. As Redes Centradas à Informação (Information-Centric Networking
- ICN) são um exemplo proeminente destas novas arquiteturas que, em vez
de seguirem um modelo de comunicação centrado nos dispositivos terminais,
centram as suas funções de rede em torno do próprio conteúdo.
Paralelamente, novos cenários de utilização onde dispositivos inteligentes interagem
entre si, e com outros elementos de rede, têm vindo a aparecer e
constituem o que hoje conhecemos como a Internet das Coisas (Internet of
Things - IoT ). É esperado que a IoT tenha um impacto significativo na economia
e na sociedade. No entanto, promover a adoção em massa da IoT ainda
requer que muitos desafios sejam superados. Apesar dos desenvolvimentos
recentes, vários problemas relacionados com a adoção em larga escala de
soluções de IoT baseadas no protocolo IP estão em aberto.
O facto da IoT estar focada em dados e informação, em vez de comunicações
ponto-a-ponto, sugere a adoção de soluções baseadas em arquiteturas
ICN. Neste sentido, este trabalho explora os conceitos base destas soluções
para desenvolver uma visão completa dos principais requisitos que devem ser
satisfeitos por uma solução IoT baseada na arquitetura de rede ICN. Esta visão
é complementada com soluções para problemas cruciais para a adoção
de uma IoT baseada em ICN. Em primeiro lugar, assegurar que a informação
seja atualizada e, ao mesmo tempo, manter as vantagens do armazenamento
intrínseco em elementos de rede das arquiteturas ICN. Em segundo lugar,
permitir as funcionalidades de descoberta não só em domínios locais, mas
também em domínios de larga-escala. Os mecanismos propostos são avaliados
através de simulações e prototipagem, com os resultados a demonstrarem
a viabilidade da sua adoção. Para além disso, os resultados deste
trabalho contribuem para o desenvolvimento de conceitos sólidos em direção
a uma verdadeira Internet das Coisas baseada em Nomes.Programa Doutoral em Telecomunicaçõe
SoK: Distributed Computing in ICN
Information-Centric Networking (ICN), with its data-oriented operation and
generally more powerful forwarding layer, provides an attractive platform for
distributed computing. This paper provides a systematic overview and
categorization of different distributed computing approaches in ICN
encompassing fundamental design principles, frameworks and orchestration,
protocols, enablers, and applications. We discuss current pain points in legacy
distributed computing, attractive ICN features, and how different systems use
them. This paper also provides a discussion of potential future work for
distributed computing in ICN.Comment: 10 pages, 3 figures, 1 table. Accepted by ACM ICN 202
Improved Caching Strategies for Publish/Subscribe Internet Networking
MEng thesisThe systemic structure of TCP/IP is outdated; a new scheme for data transportation is needed in order to make the internet more adaptive to modern demands of mobility, information-driven demand, ever-increasing quantity of users and data, and performance requirements. While an information centric networking system addresses these issues, one required component for publish subscribe or content-addressed internet networking systems to work properly is an improved caching system. This allows the publish subscribe internet networking to dynamically route packets to mobile users, as an improvement over pure hierarchical or pure distributed caching systems. To this end, I proposed, implemented, and analyzed the workings of a superdomain caching system. The superdomain caching system is a hybrid of hierarchical and dynamic caching systems designed to continue reaping the benefits of the caching system for mobile users (who may move between neighboring domains in the midst of a network transaction) while minimizing the latency inherent in any distributed caching system to improve upon the content-addressed system
Novel applications and contexts for the cognitive packet network
Autonomic communication, which is the development of self-configuring, self-adapting, self-optimising and self-healing communication systems, has gained much attention in the network research community. This can be explained by the increasing demand for more sophisticated networking technologies with physical realities that possess computation capabilities and can operate successfully with minimum human intervention. Such systems are driving innovative applications and services that improve the quality of life of citizens both socially and economically. Furthermore, autonomic communication, because of its decentralised approach to communication, is also being explored by the research community as an alternative to centralised control infrastructures for efficient management of large networks. This thesis studies one of the successful contributions in the autonomic communication research, the Cognitive Packet Network (CPN). CPN is a highly scalable adaptive routing protocol that
allows for decentralised control in communication. Consequently, CPN has achieved significant successes, and because of the direction of research, we expect it to continue to find relevance. To investigate this hypothesis, we research new applications and contexts for CPN. This thesis first studies Information-Centric Networking (ICN), a future Internet architecture
proposal. ICN adopts a data-centric approach such that contents are directly addressable at the network level and in-network caching is easily supported. An optimal caching strategy for an information-centric network is first analysed, and approximate solutions are developed and evaluated. Furthermore, a CPN inspired forwarding strategy for directing requests in such a way that exploits the in-network caching capability of ICN is proposed. The proposed strategy is evaluated via discrete event simulations and shown to be more effective in its search for local cache hits compared to the conventional methods. Finally, CPN is proposed to implement the routing system of an Emergency Cyber-Physical System for guiding evacuees in confined spaces in emergency situations. By exploiting CPN’s QoS capabilities, different paths are assigned to evacuees based on their ongoing health conditions using well-defined path metrics. The proposed system is evaluated via discrete-event simulations and shown to improve survival chances compared to a static system that treats evacuees in the same way.Open Acces
Conhecimento da mobilidade do consumidor em redes centradas em informação
Mobile data traffic is expanding significantly since the surge and evolution of wireless
communication technologies, leading to the design and implementation of
different types of mobile networks.
Information Centric Network paradigms have been pointed as an alternative to
bypass the restrictions imposed by the traditional IP Networks, such as the one
imposed by the mobility of its users. Despite their potential advantages regarding
mobile wireless environments, several significant research challenges remain to be
addressed, more specifically the communication damage due to handover, causing
loss of packets.
The scope of this dissertation is the development of NDN-based mechanisms with
support for Consumer mobility in two different communication approaches: single
content request and publish-subscribe. The proposed schemes address a remote
mobility predictor entity, whose purpose is to monitor and anticipate trajectories,
while compelling the infrastructure to adjust to the new paths, resulting in an
efficient way to manage the consumers’ mobility with the purpose of attaining a
better quality of service to users.
The implementation and evaluation of the proposed schemes were performed using
ndnSIM, through functional and non-functional scenarios. The latter uses
real traces of urban mobility and connectivity. The obtained results show that
the proposed solution far surpasses the native NDN workflow and the traditional
publish-subscribe solutions with respect to content delivery ratio and network overhead.O tráfego de dados móveis tem vindo a crescer significativamente, sobretudo devido
à evolução das tecnologias de comunicação sem fios, o que tem vindo a implicar o
desenho e implementação de novos e diferentes tipos de redes móveis.
Os paradigmas de redes centradas em informação têm sido apontados como uma
alternativa para contornar as restrições impostas pelas redes tradicionais IP, nomeadamente
a mobilidade dos seus utilizadores. Apesar das potenciais vantagens em
relação aos ambientes móveis sem fios, vários desafios de investigação ainda necessitam
de ser resolvidos, mais especificamente aqueles relacionados com o processo
de handover dos seus utilizadores móveis, levando por vezes à perda de informação.
Esta dissertação tem como objetivo o desenvolvimento de mecanismos de suporte à
mobilidade do Consumidor para redes ICN, utilizando duas abordagens distintas de
comunicação: solicitação única de conteúdo e o modelo publish − subscribe. Os
esquemas propostos exploram uma entidade remota de previsão de mobilidade, cujo
objetivo é monitorizar e antecipar eventuais trajetórias de posição dos utilizadores
móveis, obrigando a infraestrutura a ajustar-se aos novos caminhos do consumidor,
resultando numa forma eficiente de gestão de mobilidade dos utilizadores com o
objetivo de garantir uma melhor qualidade de serviço.
A implementação e avaliação dos esquemas propostos foi realizada utilizando o
ndnSIM, em cenários funcionais e não funcionais. Estes últimos utilizam registos
reais de mobilidade e conetividade urbana. Os resultados obtidos mostram
que a solução proposta ultrapassa significativamenta a versão nativa do NDN e as
soluções tradicionais de publish − subscribe, considerando a taxa de entrega de
conteúdos e sobrecarga da rede.Mestrado em Engenharia de Computadores e Telemátic