A Review on Efficient Mac Layer Handoff Protocol to Reduce Handoff Latency for Wi-Fi Based Wireless Network

Mohini Joshi¹ , Kishore Kumbhare²

1. Department of Electronics and Communication, JIT, RGPV, Borawan, India.
2. Department of Electronics and Communication, JIT, RGPV, Borawan, India.

Section:Review Paper, Product Type: Isroset-Journal
Vol.6 , Issue.2 , pp.82-86, Apr-2018

CrossRef-DOI:   https://doi.org/10.26438/ijsrcse/v6i2.8286

Online published on Apr 30, 2018

Copyright © Mohini Joshi, Kishore Kumbhare . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
In next generation mobile heterogeneous networks and WIFI-based wireless networks are becoming important components, because WIFI devices are widely used in laptops, PDAs and other mobile computing machines. In a WIFI-based wireless network, handoff management is a key service, as the radio range of the WIFI device is limited. Moreover, providing seamless roaming in wireless networks is mandatory for supporting real-time applications in a mobile environment, such as VoIP, online games, and e Conference. Recently, many solutions have been introduced to reduce MAC layer handoff latency; however, these solutions consider every mobile node separately, which would not be suitable for a large-scale environment. This paper proposes a novel MAC layer handoff protocol for large-scale WIFI-based wireless networks to support seamless real-time applications. In our scheme, before the mobile node starts initiating the MAC layer handoff process, it selects several neighboring nodes to help it scan available channels. All channels are divided into groups and scanned by these neighbors separately. Therefore, the number of scanning channels in each node is reduced, and scanning latency is minimized. According to simulation results in ns2, we conclude that our scheme can shorten MAC layer handoff latency greatly, and also achieve seamless handoff in terms of loss ratio of data packets.

Key-Words / Index Term :
IEEE 802. 11 Wlan Handoff, Access Point Handoff, Latency Selective, Scanning Neighbor Graph

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