Performance evaluation of multi-interfaced fast handoff scheme for PNEMO Environment

Mobility management is classified into two parts such as location management and handoff management. The earlier one concentrates on location update whereas the later one manages continuous Internet connectivity while the Mobile Router (MR) changes its single point of attachment to the network. Therefore, frequent movement of the MR is one of the significant characteristics in Network Mobility (NEMO) environment. Because, in accordance with the standard Network Mobility Basic Support Protocol (NEMO BSP), the MR utilizes single Interface to attach to the access link. MR requires changing its Care of Address (CoA) when it moves among different wireless access networks. As a result, it can directly influence the performance of the mobility management protocols during inter technology handoff of multi-interfaced MR. This paper proposed a multi-interfaced fast handoff scheme in Proxy NEMO (PNEMO) environment. After that, it represents a comparative analysis between the proposed multiinterfaced scheme, NEMO BSP and the PNEMO scheme respectively. The performance disparities of these schemes are estimated and analyzed via both numerical and simulation approaches. The simulation is performed through NS-3 network simulator. The performance metrics estimated for evaluation are mainly handoff delay and packet loss. It has been perceived that, the proposed scheme performs better compared to the PNEMO scheme and NEMO BSP

MROM scheme to improve handoff performance in mobile networks

Mobile Router (MR) mobility supported by Network Mobility Basic Support Protocol (NEMO BS) is a Mobile IPv6 (MIPv6) extension that supports Host Mobility. Proposed Multihoming and Route Optimization for MANEMO (MROM) scheme is designed to provide Route Optimization (RO) and Multihomed in NEMO architectures. This paper proposes two novel schemes; MANEMO routing scheme and Multihoming-based scheme. These are to provide support for next generation networks. The proposed MROM scheme differs from other schemes for NEMO environment because it considers the requirements of more application flows parameters as packet lost delivery, handoff delay as well as throughput). Another difference is that not only the network infrastructure can begin the functionality of flow routing, but also an Edge Mobile Router (EMR) can do this flow for routing. Moreover, it utilizes the state of the art and presently active access network to perform the separation of each flow in mobile network. Thus, proposed MROM exhibits multihoming features and improves handoff performance by initiating flow-based fast registration process in NEMO environment. A handoff method is proposed with enhanced functionalities of the Local Mobility Anchors (LMA), Mobile Routers (MRs) and signaling messages with a view to achieve continuous connectivity through handoff in NEMO. Both analytical and simulation approaches are used. Analytical evaluation is carried out to analyze packet delivery lost and handoff delay of our proposed scheme. It was also shown that cost of signaling messages and packet delivery are contributing to total handoff cost. At the simulation part, network simulator 3 (NS 3) has been used as the tool to get performance metrics that have been considered like packet delivery ratio, handoff delay, and packet loss. Our proposed scheme (MROM) has been benchmarking to the standard NEMO BS Protocol and P-NEMO. In this paper, we discuss proposed MROM for next generation networks, providing detailed analysis with a numerical model, proposed MROM, by maximizing the handoff performance, has been justified to have better mobility support than the ordinary NEMO BS Protocol and PNEMO. Keywords—MROM, MANEMO, RO, Multihomed, Handoff

Architecture réseau pour véhicule de transport en commun communiquant

Avec la démocratisation des appareils mobiles, les transports en commun sont amenés à proposer de nouveaux services à leur usagers et notamment une connexion à Internet. Le véhicule de transport en commun agit alors comme un routeur mobile fournissant une connexion fiable à ses nœuds et doit pour cela être connecté en permanence à un point d'accès. Les zones de couverture étant limitées par les technologies utilisées et par les obstacles, des changements de réseaux sont alors nécessaires et provoquant différents évènements pouvant impacter les performances des protocoles de Transport : introduction de latences dues à la configuration des interfaces, modification des caractéristiques du chemin utilisé par la communication.. Dans cette thèse nous étudions cet impact en déterminant son origine puis nous proposons des solutions visant à le réduire de deux manières : en réduisant les latences introduites par le changement de réseau et en diminuant l'impact de la modification des caractéristiques du réseau.With the growing popularity of mobile devices, Public Transport will have to evolve and will have to introduce new services to customers, like an Internet connection onboard for example. The vehicle will act as a mobile router providing its nodes with a reliable connection and therefore will be forced to stay connected to an access point at any time. Since network coverage area is restricted depending on communication technology and environment, performing handovers is mandatory, leading to network events affecting Transport protocols efficiency: latencies are introduced by network configuration, network parameters are changed brutally. This thesis studies such impact by focusing on its source before giving solutions aiming at lowering handover impact. Two means were chosen: lowering latencies introduced by network configuration and avoiding network parameters modification impact on Transport protocols