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Browse Prior Art Database

Session Aware Flow Specific Network Controlled Interface Selection for multi-homed hosts

IP.com Disclosure Number: IPCOM000021830D
Original Publication Date: 2004-Feb-10
Included in the Prior Art Database: 2004-Feb-10
Document File: 2 page(s) / 390K

Publishing Venue

Motorola

Related People

Jay Almaula: AUTHOR [+3]

Abstract

: In this paper we propose a network-controlled architecture to manage the mobility of multi-homed devices - devices with multiple network interfaces that can independently connect to different networks. The salient features of our approach are that it is session aware, i.e., it enables devices with multiple network interfaces to effectively utilize the individual network interfaces based on the network state and session characteristics without requiring the end user to be actively involved in mobility management decisions. Furthermore, it does so without exposing a user’s location and preferences from the correspondent nodes. Network control using a middle-box as opposed to an end-to-end mechanism ensures fast response, optimal network use, minimal changes to end hosts and support for legacy applications.

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Session Aware Flow Specific Network Controlled Interface Selection for multi-homed hosts

Narayanan Venkitaraman, Jay Almaula and Anwar Haneef


Abstract:In this paper we propose a network-controlled architecture to manage the mobility of multi-homed devices - devices with multiple network interfaces that can independently connect to different networks. The salient features of our approach are that it is session aware, i.e., it enables devices with multiple network interfaces to effectively utilize the individual network interfaces based on the network state and session characteristics without requiring the end user to be actively involved in mobility management decisions. Furthermore, it does so without exposing a user’s location and preferences from the correspondent nodes. Network control using a middle-box as opposed to an end-to-end mechanism ensures fast response, optimal network use, minimal changes to end hosts and support for legacy applications.

Introduction

The increase in the numbers of mobile users has been accompanied by an equally significant increase in the capability and diversity of access networks and technologies. These access technologies provide performance trade-offs in terms of mobility support, network capacity, coverage area, transmission power etc. It is inevitable that the mobile user of tomorrow will be equipped with devices that can access a network using multiple wireless interfaces. The issues posed by heterogeneity of these access technologies, the associated infrastructure and the device environment needs to be effectively addressed for a seamless and satisfying user experience.

This document describes a network architecture that allows applications, on multi-homed devices that have their multiple network interfaces that can independently be activated and deactivated (say based on their connectivity to a particular network), to utilize the individual network interfaces simultaneously to transmit and receive data that are part of a single communication session. This abstraction gives applications a holistic view of the various network interfaces and allows them to be used as if they are part of a single network connection. This architecture

also allows users to specify policies and the network to make the final decision based on the collective state of user, session and network state.

Related Work

Mobile-IP and similar vertical handoff solutions: Mobile-IP [MIP] is an end host driven network layer solution that enables packet delivery through a new network when a mobile device migrates to the new network from its old network. Devices send binding updates to a home agent and optionally to correspondent hosts to move all data coming to an IP address to a different IP address. In case of devices having multiple interfaces, mobile IP could be used to completely migrate sessions from one interface to another. However, this solution does not address the problem of enabling a session originally destined to an IP addr...