Supporting QOS in Network with Mobile Host

Abstract

The current network system architectures and mechanisms to provide real-time applications for fixed hosts are inadequate to accommodate the mobile hosts which and frequently change their point of attachments to the fixed networks. Mobility of host has a significant impact of the QoS parameters of real-time applications. In order to provide QoS to mobile hosts, mobile hosts must first make resource reservations at all locations it may visit during the lifetime of the connection. It is difficult to predict the locations a mobile host will visit in advance. Hence, the resource reserved is often wasted. In this paper, we propose two simple methods, Linear Equation Based Prediction Scheme and Group Based Prediction Scheme, to predict the locations that a mobile host will visit. We will also propose a new concept called Link Bandwidth Partition Approach a new concept called Link Bandwidth Partition Approach for bandwidth allocation. Based on this concept, we propose and admission control algorithm for our scheme. Simulation results indicate good flow drop rates.