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Enhanced Internet Mobility Using Wireless Routers and Paging

Abstract

The current IP addressing scheme tightly couples the semantics of an IP address. An IP address currently tells us two things, the identity of a node and its locality in the internetwork. This creates problems when providing services like mobility and multihoming for hosts. This project has been carried out in the context of looking at a different approach to IP addressing that can improve mobility and multihoming problems. Here the IP address is split into two parts the identity part and the locator part. The locator part is used for routing purpose and the Identity part is used to identify a host uniquely in the internet. When a host moves from one network to another the locator part of the address changes but its identity part remains the same. This allows session continuity as a mobile host transition between networks. In protocols like Mobile IP the precise location of a MN must be known before delivering data. This is done by sending updates to the network every time a host changes its point of attachment. In contrast today�s cellular networks only knows coarse location of a terminal and the precise location is only known when there is any data to be delivered. When a call arrives for a user the network is queried to locate the user. This process of locating a terminal is called Paging. It helps to reduce signalling load and helps the mobile terminal to conserve battery power by reducing the updates that otherwise are necessary. In this project we propose the concept of paging as an IP service. Paging process helps determine the exact location of the mobile node before delivering packets to it. This can allow a mobile node to stay in standby mode without updating the network and conserve battery power. IP Paging can assist a mobility protocol to be efficient in terms of power consumption at the mobile nodes and reduce extra signalling in the core network. We present the design, implementation, and qualitative and quantitative evaluation of an IP paging protocol.

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