The Experts below are selected from a list of 462 Experts worldwide ranked by ideXlab platform
Nguyen-vuong Quoc-thinh - One of the best experts on this subject based on the ideXlab platform.
-
Gestion de la mobilité dans les réseaux sans fils hétérogènes de 4ème génération
2008Co-Authors: Nguyen-vuong Quoc-thinhAbstract:L’évolution des technologies réseaux sans fils et cellulaires associée au développement des terminaux mobiles est en train d’ouvrir de nouvelles perspectives pour les usagers à savoir un accès universel et ininterrompu au réseau, aux informations et aux services. La capacité à fournir un accès ubiquitaire et une mobilité transparents à travers des réseaux hétérogènes permettra d'enrichir l'expérience des usagers. Néanmoins, la mise en place de cet environnement pose des challenges de recherche extrêmement importants que cette thèse a comme pour objectif d’aborder. Elle présente une ensemble de solutions qui contribuent à l'évolution de la convergence de technologies en améliorant différentes aspects du Handover vertical, de la synergie entre technologies cellulaires et sans fils afin que la mobilité sans couture devienne une réalité. La première partie de la thèse examine le rôle de l'utilisateur dans la gestion de la mobilité inter-système. Nous montrons comment les utilisateurs avec leurs terminaux mobiles intelligents peuvent surmonter certains obstacles dans la gestion de Handover vertical et améliorer ses performances. Une solution de la mobilité contrôlée par le terminal d'usager a été proposée. Elle consiste en un nouveau mécanisme de sélection de réseaux d'accès avec de nouvelles fonctions d'utilité. Le terminal est en mesure de contrôler ses interfaces radio pour optimiser la consommation d'énergie ainsi que de contrôler l'initiation et la préparation de Handover pour assurer des services sans interruption. Une nouvelle méthode de prédiction du Handover pour assister à la préparation d’un basculement sans couture est proposée. Dans la deuxième partie de la thèse, il s’agit d’aborder le rôle du contrôle du réseau dans la gestion de la mobilité inter-système. Une solution d'interfonctionnement entre UMTS et WiMAX, qui comprend l'architecture d'intégration, les procédures exactes de Handover, la mesure inter-système et le chevauchement nécessaire entre deux cellules avoisinantes pour assurer un Handover sans couture est proposée. Pour faciliter l'interfonctionnement et l'itinérance (roaming) entre différents réseaux d’accès indépendamment et sans accords directes entre opérateurs, des plateformes intermédiaires ont été proposées. Finalement, une contribution finale qui consiste à introduire une nouvelle définition de la charge, un nouvel indice de l'équilibrage de charge et un algorithme de répartition de charge qui permettent de définir une solution unifié de gestion de la mobilité dans un contexte de réseaux hétérogènes.In the forthcoming era of seamless mobility, people will have an easy, universal, uninterrupted access to information, entertainment and communication ... when, where and how they want it. The ability to provide a seamless transition across heterogeneous networks will enable a new level of customer experience. This thesis contributes to the evolution of technology convergence by improving different aspects of the vertical Handover management to make seamless mobility a reality. In the first part of the thesis, we emphasize on the role of user control in the mobility management. We show how users with their smart mobile terminals can overcome some obstacles in the vertical Handover management and improve its performance. We propose a terminal-controlled Handover management which is built on the top of a new utility-based access network selection. The terminal is shown to be able to control its radio interface to optimize the power consumption as well as to control the Handover initiation or Handover Preparation to ensure seamless services. We develop a new Handover prediction scheme to assist the Handover Preparation at the application level by the terminal itself. In the second part of the thesis, we consider the role of network control in the inter-system mobility management. We study a UMTS-WiMAX interworking solution including integration architecture, Handover procedure, intersystem measurement and required cell overlap for seamless Handovers. We also study the interworking and roaming solution across independent access networks using intermediary entities. Last contributions include a new load definition, a new load balancing index and a new algorithm which can hide the heterogeneities of different access technologies from the load balancing
-
Gestion de la mobilité dans les réseaux sans fils hétérogènes de 4ème génération
2008Co-Authors: Nguyen-vuong Quoc-thinh, Agoulmine NazimAbstract:L évolution des technologies réseaux sans fils et cellulaires associée au développement des terminaux mobiles est en train d ouvrir de nouvelles perspectives pour les usagers à savoir un accès universel et ininterrompu au réseau, aux informations et aux services. La capacité à fournir un accès ubiquitaire et une mobilité transparents à travers des réseaux hétérogènes permettra d'enrichir l'expérience des usagers. Néanmoins, la mise en place de cet environnement pose des challenges de recherche extrêmement importants que cette thèse a comme pour objectif d aborder. Elle présente une ensemble de solutions qui contribuent à l'évolution de la convergence de technologies en améliorant différentes aspects du Handover vertical, de la synergie entre technologies cellulaires et sans fils afin que la mobilité sans couture devienne une réalité. La première partie de la thèse examine le rôle de l'utilisateur dans la gestion de la mobilité inter-système. Nous montrons comment les utilisateurs avec leurs terminaux mobiles intelligents peuvent surmonter certains obstacles dans la gestion de Handover vertical et améliorer ses performances. Une solution de la mobilité contrôlée par le terminal d'usager a été proposée. Elle consiste en un nouveau mécanisme de sélection de réseaux d'accès avec de nouvelles fonctions d'utilité. Le terminal est en mesure de contrôler ses interfaces radio pour optimiser la consommation d'énergie ainsi que de contrôler l'initiation et la préparation de Handover pour assurer des services sans interruption. Une nouvelle méthode de prédiction du Handover pour assister à la préparation d un basculement sans couture est proposée. Dans la deuxième partie de la thèse, il s agit d aborder le rôle du contrôle du réseau dans la gestion de la mobilité inter-système. Une solution d'interfonctionnement entre UMTS et WiMAX, qui comprend l'architecture d'intégration, les procédures exactes de Handover, la mesure inter-système et le chevauchement nécessaire entre deux cellules avoisinantes pour assurer un Handover sans couture est proposée. Pour faciliter l'interfonctionnement et l'itinérance (roaming) entre différents réseaux d accès indépendamment et sans accords directes entre opérateurs, des plateformes intermédiaires ont été proposées. Finalement, une contribution finale qui consiste à introduire une nouvelle définition de la charge, un nouvel indice de l'équilibrage de charge et un algorithme de répartition de charge qui permettent de définir une solution unifié de gestion de la mobilité dans un contexte de réseaux hétérogènes.In the forthcoming era of seamless mobility, people will have an easy, universal, uninterrupted access to information, entertainment and communication ... when, where and how they want it. The ability to provide a seamless transition across heterogeneous networks will enable a new level of customer experience. This thesis contributes to the evolution of technology convergence by improving different aspects of the vertical Handover management to make seamless mobility a reality. In the first part of the thesis, we emphasize on the role of user control in the mobility management. We show how users with their smart mobile terminals can overcome some obstacles in the vertical Handover management and improve its performance. We propose a terminal-controlled Handover management which is built on the top of a new utility-based access network selection. The terminal is shown to be able to control its radio interface to optimize the power consumption as well as to control the Handover initiation or Handover Preparation to ensure seamless services. We develop a new Handover prediction scheme to assist the Handover Preparation at the application level by the terminal itself. In the second part of the thesis, we consider the role of network control in the inter-system mobility management. We study a UMTS-WiMAX interworking solution including integration architecture, Handover procedure, intersystem measurement and required cell overlap for seamless Handovers. We also study the interworking and roaming solution across independent access networks using intermediary entities. Last contributions include a new load definition, a new load balancing index and a new algorithm which can hide the heterogeneities of different access technologies from the load balancing.EVRY-Bib. électronique (912289901) / SudocSudocFranceF
Agoulmine Nazim - One of the best experts on this subject based on the ideXlab platform.
-
Gestion de la mobilité dans les réseaux sans fils hétérogènes de 4ème génération
2008Co-Authors: Nguyen-vuong Quoc-thinh, Agoulmine NazimAbstract:L évolution des technologies réseaux sans fils et cellulaires associée au développement des terminaux mobiles est en train d ouvrir de nouvelles perspectives pour les usagers à savoir un accès universel et ininterrompu au réseau, aux informations et aux services. La capacité à fournir un accès ubiquitaire et une mobilité transparents à travers des réseaux hétérogènes permettra d'enrichir l'expérience des usagers. Néanmoins, la mise en place de cet environnement pose des challenges de recherche extrêmement importants que cette thèse a comme pour objectif d aborder. Elle présente une ensemble de solutions qui contribuent à l'évolution de la convergence de technologies en améliorant différentes aspects du Handover vertical, de la synergie entre technologies cellulaires et sans fils afin que la mobilité sans couture devienne une réalité. La première partie de la thèse examine le rôle de l'utilisateur dans la gestion de la mobilité inter-système. Nous montrons comment les utilisateurs avec leurs terminaux mobiles intelligents peuvent surmonter certains obstacles dans la gestion de Handover vertical et améliorer ses performances. Une solution de la mobilité contrôlée par le terminal d'usager a été proposée. Elle consiste en un nouveau mécanisme de sélection de réseaux d'accès avec de nouvelles fonctions d'utilité. Le terminal est en mesure de contrôler ses interfaces radio pour optimiser la consommation d'énergie ainsi que de contrôler l'initiation et la préparation de Handover pour assurer des services sans interruption. Une nouvelle méthode de prédiction du Handover pour assister à la préparation d un basculement sans couture est proposée. Dans la deuxième partie de la thèse, il s agit d aborder le rôle du contrôle du réseau dans la gestion de la mobilité inter-système. Une solution d'interfonctionnement entre UMTS et WiMAX, qui comprend l'architecture d'intégration, les procédures exactes de Handover, la mesure inter-système et le chevauchement nécessaire entre deux cellules avoisinantes pour assurer un Handover sans couture est proposée. Pour faciliter l'interfonctionnement et l'itinérance (roaming) entre différents réseaux d accès indépendamment et sans accords directes entre opérateurs, des plateformes intermédiaires ont été proposées. Finalement, une contribution finale qui consiste à introduire une nouvelle définition de la charge, un nouvel indice de l'équilibrage de charge et un algorithme de répartition de charge qui permettent de définir une solution unifié de gestion de la mobilité dans un contexte de réseaux hétérogènes.In the forthcoming era of seamless mobility, people will have an easy, universal, uninterrupted access to information, entertainment and communication ... when, where and how they want it. The ability to provide a seamless transition across heterogeneous networks will enable a new level of customer experience. This thesis contributes to the evolution of technology convergence by improving different aspects of the vertical Handover management to make seamless mobility a reality. In the first part of the thesis, we emphasize on the role of user control in the mobility management. We show how users with their smart mobile terminals can overcome some obstacles in the vertical Handover management and improve its performance. We propose a terminal-controlled Handover management which is built on the top of a new utility-based access network selection. The terminal is shown to be able to control its radio interface to optimize the power consumption as well as to control the Handover initiation or Handover Preparation to ensure seamless services. We develop a new Handover prediction scheme to assist the Handover Preparation at the application level by the terminal itself. In the second part of the thesis, we consider the role of network control in the inter-system mobility management. We study a UMTS-WiMAX interworking solution including integration architecture, Handover procedure, intersystem measurement and required cell overlap for seamless Handovers. We also study the interworking and roaming solution across independent access networks using intermediary entities. Last contributions include a new load definition, a new load balancing index and a new algorithm which can hide the heterogeneities of different access technologies from the load balancing.EVRY-Bib. électronique (912289901) / SudocSudocFranceF
Jain Akshay - One of the best experts on this subject based on the ideXlab platform.
-
Enhanced mobility management mechanisms for 5G networks
Universitat Politècnica de Catalunya, 2020Co-Authors: Jain AkshayAbstract:Many mechanisms that served the legacy networks till now, are being identified as being grossly sub-optimal for 5G networks. The reason being, the increased complexity of the 5G networks compared previous legacy systems. One such class of mechanisms, important for any wireless standard, is the Mobility Management (MM) mechanisms. MM mechanismsensure the seamless connectivity and continuity of service for a user when it moves away from the geographic location where it initially got attached to the network. In this thesis, we firstly present a detailed state of the art on MM mechanisms. Based on the 5G requirements as well as the initial discussions on Beyond 5G networks, we provision a gap analysis for the current technologies/solutions to satisfy the presented requirements. We also define the persistent challenges that exist concerning MM mechanisms for 5G and beyond networks. Based on these challenges, we define the potential solutions and a novel framework for the 5G and beyond MM mechanisms. This framework specifies a set of MM mechanisms at the access, core and the extreme edge network (users/devices) level, that will help to satisfy the requirements for the 5G and beyond MM mechanisms. Following this, we present an on demand MM service concept. Such an on-demand feature provisions the necessary reliability, scalability and flexibility to the MM mechanisms. It's objective is to ensure that appropriate resources and mobility contexts are defined for users who will have heterogeneous mobility profiles, versatile QoS requirements in a multi-RAT network. Next, in this thesis we tackle the problem of core network signaling that occurs during MM in 5G/4G networks. A novel Handover signaling mechanism has been developed, which eliminates unnecessary handshakes during the Handover Preparation phase, while allowing the transition to future softwarized network architectures. We also provide a Handover failure aware Handover Preparation phase signaling process. We then utilize operator data and a realistic network deployment to perform a comparative analysis of the proposed strategy and the 3GPP Handover signaling strategy on a network wide deployment scenario. We show the benefits of our strategy in terms of latency of Handover process, and the transmission and processing cost incurred. Lastly, a novel user association and resource allocation methodology, namely AURA-5G, has been proposed. AURA-5G addresses scenarios wherein applications with heterogeneous requirements, i.e., enhanced Mobile Broadband (eMBB) and massive Machine Type Communications (mMTC), are present simultaneously. Consequently, a joint optimization process for performing the user association and resource allocation while being cognizant of heterogeneous application requirements, has been performed. We capture the peculiarities of this important mobility management process through the various constraints, such as backhaul requirements, dual connectivity options, available access resources, minimum rate requirements, etc., that we have imposed on a Mixed Integer Linear Program (MILP). The objective function of this established MILP problem is to maximize the total network throughput of the eMBB users, while satisfying the minimum requirements of the mMTC and eMBB users defined in a given scenario. Through numerical evaluations we show that our approach outperforms the baseline user association scenario significantly. Moreover, we have presented a system fairness analysis, as well as a novel fidelity and computational complexity analysis for the same, which express the utility of our methodology given the myriad network scenarios.Muchos mecanismos que sirvieron en las redes actuales, se están identificando como extremadamente subóptimos para las redes 5G. Esto es debido a la mayor complejidad de las redes 5G. Un tipo de mecanismo importante para cualquier estándar inalámbrico, consiste en el mecanismo de gestión de la movilidad (MM). Los mecanismos MM aseguran la conectividad sin interrupciones y la continuidad del servicio para un usuario cuando éste se aleja de la ubicación geográfica donde inicialmente se conectó a la red. En esta tesis, presentamos, en primer lugar, un estado del arte detallado de los mecanismos MM. Bas ándonos en los requisitos de 5G, así como en las discusiones iniciales sobre las redes Beyond 5G, proporcionamos un análisis de las tecnologías/soluciones actuales para satisfacer los requisitos presentados. También definimos los desafíos persistentes que existen con respecto a los mecanismos MM para redes 5G y Beyond 5G. En base a estos desafíos, definimos las posibles soluciones y un marco novedoso para los mecanismos 5G y Beyond 5G de MM. Este marco especifica un conjunto de mecanismos MM a nivel de red acceso, red del núcleo y extremo de la red (usuarios/dispositivos), que ayudarán a satisfacer los requisitos para los mecanismos MM 5G y posteriores. A continuación, presentamos el concepto de servicio bajo demanda MM. Tal característica proporciona la confiabilidad, escalabilidad y flexibilidad necesarias para los mecanismos MM. Su objetivo es garantizar que se definan los recursos y contextos de movilidad adecuados para los usuarios que tendrán perfiles de movilidad heterogéneos, y requisitos de QoS versátiles en una red multi-RAT. Más adelante, abordamos el problema de la señalización de la red troncal que ocurre durante la gestión de la movilidad en redes 5G/4G. Se ha desarrollado un nuevo mecanismo de señalización de Handover, que elimina los intercambios de mensajes innecesarios durante la fase de preparación del Handover, al tiempo que permite la transición a futuras arquitecturas de red softwarizada. Utilizamos los datos de operadores y consideramos un despliegue de red realista para realizar un análisis comparativo de la estrategia propuesta y la estrategia de señalización de 3GPP. Mostramos los beneficios de nuestra estrategia en términos de latencia del proceso de Handover y los costes de transmisión y procesado. Por último, se ha propuesto una nueva asociación de usuarios y una metodología de asignación de recursos, i.e, AURA-5G. AURA-5G aborda escenarios en los que las aplicaciones con requisitos heterogéneos, i.e., enhanced Mobile Broadband (eMBB) y massive Machine Type Communications (mMTC), están presentes simultáneamente. En consecuencia, se ha llevado a cabo un proceso de optimización conjunta para realizar la asociación de usuarios y la asignación de recursos mientras se tienen en cuenta los requisitos de aplicaciónes heterogéneas. Capturamos las peculiaridades de este importante proceso de gestión de la movilidad a través de las diversas restricciones impuestas, como son los requisitos de backhaul, las opciones de conectividad dual, los recursos de la red de acceso disponibles, los requisitos de velocidad mínima, etc., que hemos introducido en un Mixed Integer Linear Program (MILP). La función objetivo de este problema MILP es maximizar el rendimiento total de la red de los usuarios de eMBB, y a la vez satisfacer los requisitos mínimos de los usuarios de mMTC y eMBB definidos en un escenario dado. A través de evaluaciones numéricas, mostramos que nuestro enfoque supera significativamente el escenario de asociación de usuarios de referencia. Además, hemos presentado un análisis de la justicia del sistema, así como un novedoso análisis de fidelidad y complejidad computacional para el mismo, que expresa la utilidad de nuestra metodología
-
Enhanced mobility management mechanisms for 5G networks
Universitat Politècnica de Catalunya, 2020Co-Authors: Jain AkshayAbstract:Many mechanisms that served the legacy networks till now, are being identified as being grossly sub-optimal for 5G networks. The reason being, the increased complexity of the 5G networks compared previous legacy systems. One such class of mechanisms, important for any wireless standard, is the Mobility Management (MM) mechanisms. MM mechanismsensure the seamless connectivity and continuity of service for a user when it moves away from the geographic location where it initially got attached to the network. In this thesis, we firstly present a detailed state of the art on MM mechanisms. Based on the 5G requirements as well as the initial discussions on Beyond 5G networks, we provision a gap analysis for the current technologies/solutions to satisfy the presented requirements. We also define the persistent challenges that exist concerning MM mechanisms for 5G and beyond networks. Based on these challenges, we define the potential solutions and a novel framework for the 5G and beyond MM mechanisms. This framework specifies a set of MM mechanisms at the access, core and the extreme edge network (users/devices) level, that will help to satisfy the requirements for the 5G and beyond MM mechanisms. Following this, we present an on demand MM service concept. Such an on-demand feature provisions the necessary reliability, scalability and flexibility to the MM mechanisms. It's objective is to ensure that appropriate resources and mobility contexts are defined for users who will have heterogeneous mobility profiles, versatile QoS requirements in a multi-RAT network. Next, in this thesis we tackle the problem of core network signaling that occurs during MM in 5G/4G networks. A novel Handover signaling mechanism has been developed, which eliminates unnecessary handshakes during the Handover Preparation phase, while allowing the transition to future softwarized network architectures. We also provide a Handover failure aware Handover Preparation phase signaling process. We then utilize operator data and a realistic network deployment to perform a comparative analysis of the proposed strategy and the 3GPP Handover signaling strategy on a network wide deployment scenario. We show the benefits of our strategy in terms of latency of Handover process, and the transmission and processing cost incurred. Lastly, a novel user association and resource allocation methodology, namely AURA-5G, has been proposed. AURA-5G addresses scenarios wherein applications with heterogeneous requirements, i.e., enhanced Mobile Broadband (eMBB) and massive Machine Type Communications (mMTC), are present simultaneously. Consequently, a joint optimization process for performing the user association and resource allocation while being cognizant of heterogeneous application requirements, has been performed. We capture the peculiarities of this important mobility management process through the various constraints, such as backhaul requirements, dual connectivity options, available access resources, minimum rate requirements, etc., that we have imposed on a Mixed Integer Linear Program (MILP). The objective function of this established MILP problem is to maximize the total network throughput of the eMBB users, while satisfying the minimum requirements of the mMTC and eMBB users defined in a given scenario. Through numerical evaluations we show that our approach outperforms the baseline user association scenario significantly. Moreover, we have presented a system fairness analysis, as well as a novel fidelity and computational complexity analysis for the same, which express the utility of our methodology given the myriad network scenarios.Muchos mecanismos que sirvieron en las redes actuales, se están identificando como extremadamente subóptimos para las redes 5G. Esto es debido a la mayor complejidad de las redes 5G. Un tipo de mecanismo importante para cualquier estándar inalámbrico, consiste en el mecanismo de gestión de la movilidad (MM). Los mecanismos MM aseguran la conectividad sin interrupciones y la continuidad del servicio para un usuario cuando éste se aleja de la ubicación geográfica donde inicialmente se conectó a la red. En esta tesis, presentamos, en primer lugar, un estado del arte detallado de los mecanismos MM. Bas ándonos en los requisitos de 5G, así como en las discusiones iniciales sobre las redes Beyond 5G, proporcionamos un análisis de las tecnologías/soluciones actuales para satisfacer los requisitos presentados. También definimos los desafíos persistentes que existen con respecto a los mecanismos MM para redes 5G y Beyond 5G. En base a estos desafíos, definimos las posibles soluciones y un marco novedoso para los mecanismos 5G y Beyond 5G de MM. Este marco especifica un conjunto de mecanismos MM a nivel de red acceso, red del núcleo y extremo de la red (usuarios/dispositivos), que ayudarán a satisfacer los requisitos para los mecanismos MM 5G y posteriores. A continuación, presentamos el concepto de servicio bajo demanda MM. Tal característica proporciona la confiabilidad, escalabilidad y flexibilidad necesarias para los mecanismos MM. Su objetivo es garantizar que se definan los recursos y contextos de movilidad adecuados para los usuarios que tendrán perfiles de movilidad heterogéneos, y requisitos de QoS versátiles en una red multi-RAT. Más adelante, abordamos el problema de la señalización de la red troncal que ocurre durante la gestión de la movilidad en redes 5G/4G. Se ha desarrollado un nuevo mecanismo de señalización de Handover, que elimina los intercambios de mensajes innecesarios durante la fase de preparación del Handover, al tiempo que permite la transición a futuras arquitecturas de red softwarizada. Utilizamos los datos de operadores y consideramos un despliegue de red realista para realizar un análisis comparativo de la estrategia propuesta y la estrategia de señalización de 3GPP. Mostramos los beneficios de nuestra estrategia en términos de latencia del proceso de Handover y los costes de transmisión y procesado. Por último, se ha propuesto una nueva asociación de usuarios y una metodología de asignación de recursos, i.e, AURA-5G. AURA-5G aborda escenarios en los que las aplicaciones con requisitos heterogéneos, i.e., enhanced Mobile Broadband (eMBB) y massive Machine Type Communications (mMTC), están presentes simultáneamente. En consecuencia, se ha llevado a cabo un proceso de optimización conjunta para realizar la asociación de usuarios y la asignación de recursos mientras se tienen en cuenta los requisitos de aplicaciónes heterogéneas. Capturamos las peculiaridades de este importante proceso de gestión de la movilidad a través de las diversas restricciones impuestas, como son los requisitos de backhaul, las opciones de conectividad dual, los recursos de la red de acceso disponibles, los requisitos de velocidad mínima, etc., que hemos introducido en un Mixed Integer Linear Program (MILP). La función objetivo de este problema MILP es maximizar el rendimiento total de la red de los usuarios de eMBB, y a la vez satisfacer los requisitos mínimos de los usuarios de mMTC y eMBB definidos en un escenario dado. A través de evaluaciones numéricas, mostramos que nuestro enfoque supera significativamente el escenario de asociación de usuarios de referencia. Además, hemos presentado un análisis de la justicia del sistema, así como un novedoso análisis de fidelidad y complejidad computacional para el mismo, que expresa la utilidad de nuestra metodología.Postprint (published version
-
Evolutionary 4G/5G network architecture assisted efficient Handover signaling
'Institute of Electrical and Electronics Engineers (IEEE)', 2018Co-Authors: Jain Akshay, López Aguilera M. Elena, Seyfettin Demirkol IlkerAbstract:Future wireless networks are expected to be ultra-dense and heterogeneous not just in terms of the number and type of base stations but also in terms of the number of users and the application types they access. Such a network architecture will require mobility management mechanisms that adapt rapidly to these highly dynamic network characteristics. In particular, the optimality of the Handover signaling within these future network architectures will be extremely critical given their density and heterogeneity. In this paper, the optimality is relevant for both the total amount of signaling created and the total delay per Handover process. In this paper, we first present a novel and optimized message mapping and signaling mechanism for the Handover Preparation and failure phases. We also develop a novel Handover failure aware Preparation signaling methodology, which accounts for the possibility of a Handover failure and grants additional enhancements to the Handover Preparation and failure signaling phases. Through the analytical framework provided in this paper, we conduct studies to quantify the performance gains promised by the proposed mechanisms. These studies cover myriad Handover scenarios as identified by 3GPP and use the statistics from cellular network operators and vendors. We then develop the idea and analytical framework for network wide analysis, in which the network wide processing cost and network occupation time for various Handover failure rates are computed. Finally, we propose an evolutionary network architecture that facilitates the proposed signaling mechanism as well as assists operators in maintaining a manageable capital expenditure. It combines the current day and 3GPP proposed 5G network architecture with the software-defined networking approach. As a result, we argue that the proposed mechanisms are viable and outperform the legacy Handover signaling mechanisms in terms of latency incurred, total network occupation time, number of messages generated, and total bytes transferred.Peer ReviewedPostprint (author's final draft
Group G. Bajko - One of the best experts on this subject based on the ideXlab platform.
-
Locating IEEE 802.21 Mobility Services Using DNS
2009Co-Authors: Group G. BajkoAbstract:This document defines application service tags that allow service location without relying on rigid domain naming conventions, and DNS procedures for discovering servers that provide IEEE 802.21-defined Mobility Services. Such Mobility Services are used to assist a Mobile Node (MN) supporting IEEE 802.21, in Handover Preparation (network discovery) and Handover decision (network selection). The services addressed by this document are the Media Independent Handover Services defined in IEEE 802.21. Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards " (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (c) 2009 IETF Trust and the persons identified as th
-
S.: Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Options for
2009Co-Authors: Group G. BajkoAbstract:This document defines new Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) options that contain a list of IP addresses and a list of domain names that can be mapped to servers providing IEEE 802.21 type of Mobility Service (MoS) (see RFC 5677). These Mobility Services are used to assist a mobile node (MN) in Handover Preparation (network discovery) and Handover decision (network selection). The services addressed in this document are the Media Independent Handover Services defined in IEEE 802.21. Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards " (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (c) 2009 IETF Trust and the persons identified as th
-
Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Options for
2009Co-Authors: Group G. Bajko, S. DasAbstract:IEEE 802.21 Mobility Services (MoS) Discovery This document defines new Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) options that contain a list of IP addresses and a list of domain names that can be mapped to servers providing IEEE 802.21 type of Mobility Service (MoS) (see RFC 5677). These Mobility Services are used to assist a mobile node (MN) in Handover Preparation (network discovery) and Handover decision (network selection). The services addressed in this document are the Media Independent Handover Services defined in IEEE 802.21. Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards " (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (c) 2009 IETF Trust and the persons identified as th
S. Das - One of the best experts on this subject based on the ideXlab platform.
-
Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Options for
2009Co-Authors: Group G. Bajko, S. DasAbstract:IEEE 802.21 Mobility Services (MoS) Discovery This document defines new Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) options that contain a list of IP addresses and a list of domain names that can be mapped to servers providing IEEE 802.21 type of Mobility Service (MoS) (see RFC 5677). These Mobility Services are used to assist a mobile node (MN) in Handover Preparation (network discovery) and Handover decision (network selection). The services addressed in this document are the Media Independent Handover Services defined in IEEE 802.21. Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards " (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (c) 2009 IETF Trust and the persons identified as th
