Emerging Wireless LAN Mobility Protocols

Wireless LANs have become the dominant device over the last few years. The initial goal was to remove cables from the network, but with the fast pace in technological development wireless networks became popular not only inside organizations, but also as hotspots throughout cities. Major governments are encouraging the institutes to deploy wireless LANs due to the increase in number of Internet users and online applications. Over the past few years, wireless LANs have grown tremendously from a small network to the enterprise level, installed across buildings and organizations to provide mobility. In addition, the mobility and convenience of wireless has been improved by the advanced throughput and range performance available in today’s products, extending the reach of wireless LANs to a broad array of applications. This has led researchers to work on protocols which provide smooth mobility to the mobile nodes. It has opened the door to develop protocols which can be used to provide mobility within an organization and between organizations. This paper discusses the existing mobility architecture and reviews some of the emerging wireless mobility protocols—specifically host-based and network-based mobility—with a focus on local and global mobility. It also serves as part of the ongoing research for the PhD program in the department of Computer Science at the Universiti Teknologi Malaysia

MobiSplit: a Scalable Approach to Emerging Mobility Networks

First ACM/IEEE International Workshop on Mobility in the Evolving Internet Architecture. Session: Architectural issues. San Francisco, California, Dec. 01 2006This paper presents a novel architecture, MobiSplit, to manage mobility in future IP based networks. The proposed architecture separates mobility management in two levels, local and global, that are managed in completely independent ways. The paper describes the flexibility advantages that this architecture brings to operators, and how it is appropriate for the current trend to multiple and very different access providers and operators. Heterogeneity, support for seamless handovers and multihoming, and scalability issues are analyzed in the paper

PMIPv6: a network-based localized mobility management solution

European Community's Seventh Framework ProgramPublicad

Network-based localized IP mobility management: Proxy Mobile IPv6 and current trends in standardization

IP mobility support has been a hot topic over the last years, recently fostered by the role of IP in the evolution of the 3G mobile communication networks. Standardization bodies, namely IETF, IEEE and 3GPP are working on different aspects of the mobility aiming at improving the mobility experience perceived by users. Traditional IP mobility support mechanisms, Mobile IPv4 or Mobile IPv6, are based on the operation of the terminal to keep ongoing sessions despite the movement. The current trend is towards network-based solutions where mobility support is based on network operation. Proxy Mobile IPv6 is a promising specification that allows network operators to provide localized mobility support without relying on mobility functionality or configuration present in the mobile nodes, which greatly eases the deployment of the solution. This paper presents Proxy Mobile IPv6 and the different extensions that are been considered by the standardization bodies to enhance the basic protocol with interesting features needed to offer a richer mobility experience, namely, flow mobility, multicast and network mobility support.European Community's Seventh Framework ProgramThe research leading to the results presented in this paper has received funding from the Spanish MICINN through the I-MOVING project (TEC2010-18907) and from the European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreement 258053 (MEDIEVAL project).Publicad

Modeling and Analysis of an Energy-Efficient Mobility Management Scheme in IP-Based Wireless Networks†

An energy-efficient mobility management scheme in IP-based wireless networks is proposed to reduce the battery power consumption of mobile hosts (MHs). The proposed scheme manages seven MH states, including transmitting, receiving, attention/cell-connected, attention/paging area(PA)-connected, idle, off/attached, and detached states, to efficiently manage battery power, radio resources, and network load. We derive the stationary probabilities and steady state probabilities of the seven MH states for the proposed scheme in IP-based wireless networks in compact form. The effects of various input parameters on MH steady state probabilities and power consumption are investigated in the proposed scheme compared to the conventional scheme. Network costs such as cell updates, PA updates, binding-lifetime-based registrations, and paging messages are analyzed in the proposed and conventional schemes. The optimal values of PA size and registration interval are derived to minimize the network cost of the proposed scheme. The combined network and power costs are investigated for the proposed and conventional schemes. The results provide guidelines to select the proper system parameters in IP-based wireless networks

Estudio de la movilidad en redes de siguiente generación

El continuo avance de las redes de telecomunicaciones nos proporciona cada vez más facilidades en todos los ámbitos de nuestra vida. En este caso, nos hemos centrado en el estudio de la movilidad en Redes de Siguiente Generación. Una parte del presente proyecto se ha realizado en colaboración con Deutsche Telekom AG, durante una estancia de seis meses trabajando como colaboradora en sus laboratorios con emplazamiento en Berlín. El principal objetivo de este proyecto ha sido realizar un estudio sobre los diferentes estándares y tecnologías que facilitan la movilidad en Redes de Siguiente Generación. Por ello, en la primera parte se han estudiado los diferentes grupos de trabajo centrados en este aspecto, así como se ha recabado información sobre productos y soluciones disponibles en el mercado, para obtener una visión global de la situación actual. Como se puede comprobar más adelante, esta primera parte es la más extensa de todo el documento. Esto se debe a que es, probablemente, la parte más importante del trabajo, ya que contiene el estudio de los mecanismos que más tarde nos servirán para dar una solución teórica a los distintos escenarios que se plantean. En la segunda parte del proyecto, nos hemos centrado en desarrollar varios escenarios de interés en sistemas de Redes de Siguiente Generación y aportar, de forma posterior, posibles soluciones teóricas. Para finalizar, se han expuesto las conclusiones extraídas como resultado del trabajo y los aspectos que se podrán tratar sobre el mismo en un futuro próximo.Ingeniería de Telecomunicació

Architecture for Mobile Heterogeneous Multi Domain Networks

Multi domain networks can be used in several scenarios including military, enterprize networks, emergency networks and many other cases. In such networks, each domain might be under its own administration. Therefore, the cooperation among domains is conditioned by individual domain policies regarding sharing information, such as network topology, connectivity, mobility, security, various service availability and so on. We propose a new architecture for Heterogeneous Multi Domain (HMD) networks, in which one the operations are subject to specific domain policies. We propose a hierarchical architecture, with an infrastructure of gateways at highest-control level that enables policy based interconnection, mobility and other services among domains. Gateways are responsible for translation among different communication protocols, including routing, signalling, and security. Besides the architecture, we discuss in more details the mobility and adaptive capacity of services in HMD. We discuss the HMD scalability and other advantages compared to existing architectural and mobility solutions. Furthermore, we analyze the dynamic availability at the control level of the hierarchy

Reliable Multicast Transport for Heterogeneous Mobile IP environment using Cross-Layer Information

Reliable multicast transport architecture designed for heterogeneous mobile IP environment using cross-layer information for enhanced Quality of Service (QoS) and seamless handover is discussed. In particular, application-specific reliable multicast retransmission schemes are proposed, which are aimed to minimize the protocol overhead taking into account behaviour of mobile receivers (loss of connectivity and handover) and the specific application requirements for reliable delivery (such as carousel, one-to-many download and streaming delivery combined with recording). The proposed localized retransmission strategies are flexible configured for tree-based multicast transport. Cross layer interactions in order to enhance reliable transport and support seamless handover is discussed considering IEEE 802.21 media independent handover mechanisms. The implementation is based on Linux IPv6 environment. Simulations in ns2 focusing on the benefits of the proposed multicast retransmission schemes for particular application scenarios are presented

Aplicaciones del RFC 5213 – Proxy Mobile IPv6 – Comparación de ambientes móviles en redes académicas

The use of academic networks is producing important changes in research and education fields, providing new tools that bring us closer to other scientific and educational worldwide communities. Thus, investigations can be carried out between geographically dispersed work teams. A good complement for these scenarios is the use of mobility techniques. In this paper, a comparison between two different mobile IP alternatives is presented. Evaluated standards are Mobile IPv6 (MIPv6) and Proxy Mobile IPv6 (PMIPv6). Performance, advantages, disadvantages, configuration and installation comparisons are made. Afterwards the behavior of handover is evaluated for traditional and real time applications. Finally, comparisons and a conclusion are made.Sociedad Argentina de Informática e Investigación Operativa (SADIO