Mobility Management in beyond 3G-Environments

Beyond 3G-environments are typically defined as environments that integrate different wireless and fixed access network technologies. In this paper, we address IP based Mobility Management (MM) in beyond 3G-environments with a focus on wireless access networks, motivated by the current trend of WiFi, GPRS, and UMTS networks. The GPRS and UMTS networks provide countrywide network access, while the WiFi networks provide network access in local areas such as city centres and airports. As a result, mobile end-users can be always on-line and connected to their preferred network(s), these network preferences are typically stored in a user profile. For example, an end-user who wishes to be connected with highest bandwidth could be connected to a WiFi network when available and fall back to GPRS when moving outside the hotspot area.\ud In this paper, we consider a combination of MM for legacy services (like web browsing, telnet, etc.) using Mobile IP and multimedia services using SIP. We assume that the end-user makes use of multi-interface terminals with the capability of selecting one or more types of access networks\ud based on preferences. For multimedia sessions, like VoIP or streaming video, we distinguish between changes in network access when the end-user is in a session or not in a session. If the end-user is not in a session, he or she needs to be able to start new sessions and receive invitations for new sessions. If the end-user is in a session, the session needs to be handed over to the new access network as seamless as possible from the perspective of the end-user. We propose an integrated but flexible solution to these problems that facilitates MM with a customizable transparency to applications and end-users

Mobile IP: state of the art report

Due to roaming, a mobile device may change its network attachment each time it moves to a new link. This might cause a disruption for the Internet data packets that have to reach the mobile node. Mobile IP is a protocol, developed by the Mobile IP Internet Engineering Task Force (IETF) working group, that is able to inform the network about this change in network attachment such that the Internet data packets will be delivered in a seamless way to the new point of attachment. This document presents current developments and research activities in the Mobile IP area

New Software Architecture for Mobility and Handoff Management in Mobile IPV6 Networks

This paper addresses the problem of overall network signaling and packet delivery cost in Mobile Internet Protocol (MIP) systems for serving mobility and service management related operations. In MIP, a Mobile Node (MN) interacts with its home agent, when it is connected to a foreign agent to manage the mobility and packet delivery in a bidirectional tunneling mode. This paper proposes new software mobility management service architecture with the goal to handle the heavy burden on the home network and to minimize the cost of network signaling and packet delivery. Under the proposed architecture, a MN creates a Mobile Remote Object (MRO) and transfers it to the router of the hosted network. The MRO registers itself with a naming service server. The MRO handles all services engaged by the MN without relying on centralized traffic

Generic Models for Mobility Management in Next Generation Networks

In the network community different mobility management techniques have been proposed over the years. However, many of these techniques share a surprisingly high number of similarities. In this technical report we analyze and evaluate the most relevant mobility management techniques, pointing out differences and similarities. For macro-mobility we consider Mobile IP (MIP), the Session Initiation Protocol (SIP) and mobility management techniques typical of a GSM network; for micro-mobility we describe and analyze several protocols such as: Hierarchical MIP, TeleMIP, IDMP, Cellular IP and HAWAII

MOBILITY SUPPORT ARCHITECTURES FOR NEXT-GENERATION WIRELESS NETWORKS

With the convergence of the wireless networks and the Internet and the booming demand for multimedia applications, the next-generation (beyond the third generation, or B3G) wireless systems are expected to be all IP-based and provide real-time and non-real-time mobile services anywhere and anytime. Powerful and efficient mobility support is thus the key enabler to fulfil such an attractive vision by supporting various mobility scenarios. This thesis contributes to this interesting while challenging topic. After a literature review on mobility support architectures and protocols, the thesis starts presenting our contributions with a generic multi-layer mobility support framework, which provides a general approach to meet the challenges of handling comprehensive mobility issues. The cross-layer design methodology is introduced to coordinate the protocol layers for optimised system design. Particularly, a flexible and efficient cross-layer signalling scheme is proposed for interlayer interactions. The proposed generic framework is then narrowed down with several fundamental building blocks identified to be focused on as follows. As widely adopted, we assume that the IP-based access networks are organised into administrative domains, which are inter-connected through a global IP-based wired core network. For a mobile user who roams from one domain to another, macro (inter-domain) mobility management should be in place for global location tracking and effective handoff support for both real-time and non-real-lime applications. Mobile IP (MIP) and the Session Initiation Protocol (SIP) are being adopted as the two dominant standard-based macro-mobility architectures, each of which has mobility entities and messages in its own right. The work explores the joint optimisations and interactions of MIP and SIP when utilising the complementary power of both protocols. Two distinctive integrated MIP-SIP architectures are designed and evaluated, compared with their hybrid alternatives and other approaches. The overall analytical and simulation results shown significant performance improvements in terms of cost-efficiency, among other metrics. Subsequently, for the micro (intra-domain) mobility scenario where a mobile user moves across IP subnets within a domain, a micro mobility management architecture is needed to support fast handoffs and constrain signalling messaging loads incurred by intra-domain movements within the domain. The Hierarchical MIPv6 (HMIPv6) and the Fast Handovers for MIPv6 (FMIPv6) protocols are selected to fulfil the design requirements. The work proposes enhancements to these protocols and combines them in an optimised way. resulting in notably improved performances in contrast to a number of alternative approaches

Multicast Mobility in Mobile IP Version 6 (MIPv6) : Problem Statement and Brief Survey

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Proposal and analysis of integrated PTN architecture in the mobile backhaul to improve the QoS of HetNets

Los rápidos avances de las tecnologías de dispositivos móviles han implicado que la red de acceso debe evolucionar y desarrollar nuevas estrategias para satisfacer las necesidades de los usuarios. La red heterogénea (HetNet) permite una estrategia de implementación flexible y ofrece soluciones económicamente viables para mejorar la escalabilidad de red y cobertura en interiores. Este tema emergente ha captado la atención de la comunidad científica y la industria debido a la importancia de estas redes para satisfacer la demanda de servicios de datos. Para proporcionar esta demanda, deben satisfacerse diferentes parámetros de calidad de servicio (QoS). En este trabajo, presentamos un estudio sobre los últimos avances y los temas de investigación sobre movilidad en conjunción con protocolos de conmutación de etiquetas multiprotocolo (MPLS) de paquetes basado en redes de transporte (PTN) para proporcionar QoS en redes heterogéneas inalámbricas. Se presentan diversos protocolos de gestión móvil y su interacción con la red de retorno móvil yred básica por paquetes. Una nueva arquitectura denominada Proxy integrado Mobile MPLS-TP (MIP-TP) se expone también a reducir los costos y mejorar la señalización de la QoS en HetNets con altas tasas de movilidad.The rapid progress made in mobile device technologies has implied that the access network must evolute and develop new strategies to satisfy the requirements of the users. Heterogeneous network (HetNet) allows for a flexible deployment strategy and offers economically viable solutions to improve network scalability and indoor coverage. This emerging topic has caught the attention of the research community and the industry because of the importance of these networks to satisfy the demand of data services. To provide this demand, different parameters of quality of service (QoS) must be satisfied. In this paper, we present a study on recent advances and open research issues on Mobility Protocols in conjunction with Multi-Protocol Label Switching (MPLS)-based packet transport networks (PTN) to provide QoS in wireless heterogeneous networks. Various mobile management protocols and their interaction with the mobile backhaul and packet core network are briefly introduced. A new architecture called Integrated Proxy Mobile MPLS-TP (IPM-TP) is also outlined to reduce the signalling cost and improve the QoS in HetNets with high rates of mobility.Unión Europea. Fondos Europeos de Desarrollo Regional (FEDER). Proyecto SOE4/P3/E804peerReviewe