Abstract
IEEE 802.11 based mobile communication towers is used very much in many personal and industrial purposes as it provides a continuous connectivity to Mobile Nodes (MNs) and allows them to change their attachment point from old Access Point (A)P to new AP while needed. But one main problem of continuous connectivity is handover latency which consists of scanning, authentication and re-association phases. Scanning is the most time consuming part of handover process. In this paper, we introduce a prescanning mechanism using Global Positioning System (GPS) to reduce handover delay. In our method, scanning is completed almost before actual handover starts. From the simulation results, it can be seen that our proposed mechanism reduces handover delay by a great deal.
Highlights
IEEE 802.11b based wireless and mobile networks [1], called Wi-Fi commercially, and are on a demand for their extensive range of applicability, economical rates and applicability
A mobile node is connected to its old access point (AP) till it makes connection with the new AP
We propose a pre-scanning mechanism using Global Positioning System (GPS) by which we can almost eliminate scanning part of handover delay because we complete scanning almost before Mobile Nodes (MNs) enters into a new cell
Summary
IEEE 802.11b based wireless and mobile networks [1], called Wi-Fi commercially, and are on a demand for their extensive range of applicability, economical rates and applicability. Due to their limited coverage range, it results in frequent handoffs, even in moderate mobility scenarios. A mobile node is connected to its old AP till it makes connection with the new AP. This effectively reduces the packet losses incurred by hard handoff.
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