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Design and PerformanceAnalysis of Mobility Management

Schemes Based on PointerForwarding for Wireless Mesh

Networks

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Abstract We propose efficient mobility management schemes based on

pointer forwarding for wireless mesh networks (WMNs) with the

objective to reduce the overall network traffic incurred by mobilitymanagement and packet delivery.

The proposed schemes are per-user-based, i.e., the optimalthreshold of the forwarding chain length that minimizes the overallnetwork traffic is dynamically determined for each individual mobileuser, based on the users specific mobility and service patterns.

We develop analytical models based on stochastic Petri nets toevaluate the performance of the proposed schemes. Wedemonstrate that there exists an optimal threshold of theforwarding chain length, given a set of parameters characterizingthe specific mobility and service patterns of a mobile user. We alsodemonstrate that our schemes yield significantly better

performance than schemes that apply a static threshold to allmobile users.

A comparative analysis shows that our pointer forwarding schemesoutperform routing-based mobility management protocols forWMNs, especially for mobile Internet applications characterized bylarge traffic asymmetry for which the downlink packet arrival rate is

much higher than the uplink packet arrival rate.

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Existing System

The mobile IP can provide continuous Internet accessservices for the mobile user and does provide a simple andscalable solution to user mobility. Yet, mobile IP is not agood solution for users with high mobility because it maycause excessive signaling traffic and long latency.

The hierarchical mobile IP (HMIP) protocol was proposed toemploy the hierarchy of foreign agents (FAs) and thegateway FAs (GFAs) to reduce the number of registrationoperations and to reduce the signaling latency. However,since user mobility characteristics and network traffic loadare always in changing, the centralized and pre-plannednetwork topology of HMIP would become invalid or even

lead more signaling cost if no adjustment to be adopted.

This paper introduces a novel distributed and dynamicmobility management strategy for mobile IP where thesignaling burden is evenly distributed and the regionalnetwork boundary is dynamically adjusted according to thereal-time measurement of handover strength or traffic load

in the networks.

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Proposed System

Compared with traditional wireless and mobilenetworks, e.g., Wi-Fi-based wireless networksand mobile IP networks, WMNs have theadvantages of low cost, easy deployment, self-organization and self-healing, and compatibilitywith existing wired and wireless networksthrough the gateway/bridge function of meshrouters.

A WMN consists of mesh routers and meshclients. Mesh routers are similar to ordinaryrouters in wired IP networks, except that theyare connected via (possibly multichannelmultiradio) wireless links. Mesh clients arewireless mobile devices, e.g., PDAs, smartphones, laptops, etc.

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Modules

Mobile Terminal

Foreign Agents

Gateway Foreign agents Mobile Server

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Hardware Requirements:

System : Pentium IV 2.4GHz.

Hard Disk : 40 GB.

Ram : 256 MB.

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Software Requirements:

Operating system : Windows XPProfessional.

Coding Language : Java.

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THANK YOU