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General Information
Prof. T. Hikmet Karakoc
Anadolu University, Faculty of Aeronautics and Astronautics, Turkey

IJET 2009 Vol.1(3): 269-273 ISSN: 1793-8236
DOI: 10.7763/IJET.2009.V1.50

Enhancement of Handoff Speed by Improving Mobility of Data Packets

V. Berlin Hency, Preetha E, Vadivelan M, Saranya K and D. Sridharan

Abstract—Mobility and Quality of Service (QoS) plays a vital role in the Wireless networks based on the IEEE 802.11 protocol family. When mobile systems move across heterogeneous networks, ongoing real time sessions are affected not only by handoff delay but also by jitter. With respect to this scenario, we describe the features to enhance mobility by reducing the handoff latency along with reduced packet loss across the heterogeneous networks such as WLAN and UMTS by comparing the predicted rss (received signal strength) against two thresholds calculated by the mobile terminal (MT) to make handoff decision. The packet losses can be reduced by having jitter buffer with some extra delay added. Handoff speed can be improved by having pre-handoff notification using CoA (Care of Address) maintained in each router and hence the binding updates to home agent and correspondent node are performed once Previous Access Router knows a mobile node’s new CoA. By this during handoff only the node movement happens hence reducing handoff latency.

Index Terms—Mobility, voice over IP, pre-handoff, received signal strength, Heterogeneous wireless networks.

Preetha E, Vadivelan M., Saranya K are the final year BE (Computer Science) students of MIT campus, Anna University, Chennai, India.
D. Sridharan  is with the Department of Electronics and Communication Engineering, Anna University, Chennai, 600044  India (e-mail: sridharan@annauniv.edu).


Cite: V. Berlin Hency,  Preetha E, Vadivelan M, Saranya K and D. Sridharan, "Enhancement of Handoff Speed by Improving Mobility of Data Packets," International Journal of Engineering and Technology vol. 1, no. 3, pp. 269-273, 2009.

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