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Reducing MAC layer handoff latency in IEEE 802.11 wireless LANs

Published: 01 October 2004 Publication History

Abstract

With the growth of IEEE 802.11-based wireless LANs, VoIP and similar applications are now commonly used over wireless networks. Mobile station performs a handoff whenever it moves out of the range of one access point (AP) and tries to connect to a different one. This takes a few hundred milliseconds, causing interruptions in VoIP sessions. We developed a new handoff procedure which reduces the MAC layer handoff latency, in most cases, to a level where VoIP communication becomes seamless. This new handoff procedure reduces the discovery phase using a selective scanning algorithm and a caching mechanism.

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cover image ACM Conferences
MobiWac '04: Proceedings of the second international workshop on Mobility management & wireless access protocols
October 2004
140 pages
ISBN:1581139209
DOI:10.1145/1023783
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 01 October 2004

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Author Tags

  1. IEEE 802.11
  2. fast handoff
  3. selective scanning

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Overall Acceptance Rate 83 of 272 submissions, 31%

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