36 research outputs found
Distributed All-IP Mobility Management Architecture Supported by the NDN Overlay
Two of the most promising candidate solutions for realizing the next-generation all-IP mobile networks are Mobile IPv6 (MIPv6), which is the host-based and global mobility supporting protocol, and Proxy MIPv6 (PMIPv6), which is the network-based and localized mobility supporting protocol. However, the unprecedented growth of mobile Internet traffic has resulted in the development of distributed mobility management (DMM) architecture by the Internet engineering task force DMM working group. The extension of the basic MIPv6 and PMIPv6 to support their distributed and scalable deployment in the future is one of the major goals of the DMM working group. We propose an all-IP-based mobility management architecture that leverages the concept of Named Data Networking (NDN), which is a distributed content management and addressing architecture. In the proposed solution, mobility support services are distributed among multiple anchor points at the edge of the network, thereby enabling a flat architecture that exploits name-based routing in NDN. Our approach overcomes some of the major limitations of centralized IP mobility management solutions, by extending existing routing protocol and mobility management architecture, to distribute the mobility management function of anchor points in the IP network and optimize the transmission path of mobile traffic
A hybrid network/host mobility management scheme for next generation networks
Includes bibliographical references.The author proposes a hybrid network/host interworking scheme to allow the MN to transition smoothly between different access networks supporting two distinct mobility approaches
Descentralização da gestão da mobilidade IP nas redes do futuro
Doutoramento em Engenharia ElectrotécnicaThe massive adoption of sophisticated mobile devices and applications led to the increase
of mobile data in the last decade, which it is expected to continue. This increase of mobile
data negatively impacts the network planning and dimension, since core networks are
heavy centralized. Mobile operators are investigating
atten network architectures that
distribute the responsibility of providing connectivity and mobility, in order to improve the
network scalability and performance. Moreover, service providers are moving the content
servers closer to the user, in order to ensure high availability and performance of content
delivery. Besides the e orts to overcome the explosion of mobile data, current mobility
management models are heavy centralized to ensure reachability and session continuity
to the users connected to the network. Nowadays, deployed architectures have a small
number of centralized mobility anchors managing the mobile data and the mobility context
of millions of users, which introduces issues related to performance and scalability
that require costly network mechanisms.
The mobility management needs to be rethought out-of-the box to cope with
atten network
architectures and distributed content servers closer to the user, which is the purpose
of the work developed in this Thesis. The Thesis starts with a characterization of mobility
management into well-de ned functional blocks, their interaction and potential grouping.
The decentralized mobility management is studied through analytical models and simulations,
in which di erent mobility approaches distinctly distribute the mobility management
functionalities through the network. The outcome of this study showed that decentralized
mobility management brings advantages. Hence, it was proposed a novel distributed
and dynamic mobility management approach, which is exhaustively evaluated through
analytical models, simulations and testbed experiments. The proposed approach is also
integrated with seamless horizontal handover mechanisms, as well as evaluated in vehicular
environments. The mobility mechanisms are also speci ed for multihomed scenarios,
in order to provide data o oading with IP mobility from cellular to other access networks.
In the pursuing of the optimized mobile routing path, a novel network-based strategy
for localized mobility is addressed, in which a replication binding system is deployed in
the mobility anchors distributed through the access routers and gateways. Finally, we go
further in the mobility anchoring subject, presenting a context-aware adaptive IP mobility
anchoring model that dynamically assigns the mobility anchors that provide the optimized
routing path to a session, based on the user and network context.
The integration of dynamic and distributed concepts in the mobility management, such
as context-aware adaptive mobility anchoring and dynamic mobility support, allow the
optimization of network resources and the improvement of user experience. The overall
outcome demonstrates that decentralized mobility management is a promising direction,
hence, its ideas should be taken into account by mobile operators in the deployment of
future networks.Na última década verificou-se uma massificação dos dispositivos móveis e das suas aplicações, o que tem vindo a aumentar o consumo de dados móveis. Este aumento dificulta o planeamento e dimensionamento das redes devido principalmente aos modelos
extremamente centralizados adoptados por estas. Os operadores móveis têm vindo a estudar
modelos mais até para as redes, os quais distribuem a responsabilidade de fornecer
conectividade e mobilidade, no sentido de melhorar a escalabilidade e desempenho da
rede. Além disso, de forma a garantir um desempenho elevado na entrega dos conteúdos,
os fornecedores de serviço têm vindo a mover os servidores de conteúdos para locais
mais próximos do utilizador. Apesar do esforço na procura de soluções para o crescente
consumo de dados móveis, os modelos atuais de gestão de mobilidade são demasiado
centralizados para conseguir assegurar a continuidade de sessão aos utilizadores conectados
à rede. As arquiteturas implementadas têm um número muito reduzido de âncoras
móveis centralizadas que gerem todos os dados móveis e a informação de contexto da
mobilidade, o que leva a uma diminuição de desempenho e escalabilidade, solucionadas
através de mecanismos de rede dispendiosos.
A gestão da mobilidade precisa de ser repensada de forma a poder lidar com arquiteturas
de rede até com a distribuição dos servidores de conteúdos para nós mais próximos dos
utilizadores, que é o objectivo principal da Tese apresentada. Primeiro, é apresentada a
caracterização da gestão de mobilidade em blocos funcionais, a interação entre eles e potenciais agrupamentos dos mesmos. A gestão da mobilidade descentralizada é estudada
através de modelos analíticos e simulações, em que diferentes abordagens distribuem
as funcionalidades da mobilidade pela rede. Como resultado deste estudo verificou-se
que a descentralização da mobilidade traz vantagens claras. Com base nestes resultados
foi proposta uma nova abordagem de gestão de mobilidade distribuída e dinâmica,
que é exaustivamente avaliada através de modelos analíticos, simulações e experiências
numa bancada de testes. A abordagem proposta é também integrada com mecanismos
de handovers horizontais transparentes, assim como é avaliada em ambientes veiculares.
Os mecanismos de mobilidade da abordagem proposta são também especificados para
cenários de multihoming, de forma a proporcionar o offloading de dados com suporte de
mobilidade das redes celulares para outras redes de acesso. Com o objectivo de optimizar
o encaminhamento de dados móveis, foi criada uma nova estratégia para o suporte
da mobilidade localizada, em que um sistema de replicação de bindings é integrado nas
âncoras de mobilidade distribuídas através dos routers de acesso e dos gateways. Finalmente
apresenta-se um modelo de ancoramento adaptativo para a mobilidade com base
em contexto, o qual dinamicamente determina as âncoras de mobilidade que oferecem a
melhor rota para uma dada sessão, baseado na informação do utilizador e da rede.
A integração de conceitos de dinamismo e de distribuição na gestão da mobilidade, como o
ancoramento adaptativo e o suporte dinâmico da mobilidade, permitem a optimização dos
recursos da rede e uma melhor experiência por parte do utilizador. Os resultados demonstram,
de uma forma geral, que a gestão descentralizada da mobilidade é um caminho
promissor, logo este deve ser tomado em consideração pelas operadoras móveis aquando
do desenvolvimento das redes do futuro
Survey on PMIPv6-based Mobility Management Architectures for Software-Defined Networking
Software-Defined Networking (SDN) has changed the network landscape. Meanwhile, IP-based mobility management still evolves, and SDN affects it dramatically. Integrating Proxy Mobile IPv6 (PMIPv6) – a network-based mobility management protocol – with the SDN paradigm has created several promising approaches. This paper will present an extensive survey on the joint research area of PMIPv6 and SDN mobility management by detailing the available SDN-integrated network-based techniques and architectures that intend to accelerate handover and mitigate service disruption of mobility events in softwareized telecommunication networks. The article also provides an overview of where PMIPv6 can be used and how SDN may help reach those ways
Mobility Support in User-Centric Networks
In this paper, an overview of challenges and requirements for mobility management in user-centric networks is given, and a new distributed and dynamic per-application mobility management solution is presented. After a brief summary of generic mobility management concepts, existing approaches from the distributed and peer-to-peer mobility management literature are introduced, along with their applicability or shortcomings in the UCN environment. Possible approaches to deal with the decentralized and highly dynamic nature of UCNs are also provided with a discussion and an introduction to potential future work