Fast-handoff support in IEEE 802.11 wireless networks

Sangheon Pack, Jaeyoung Choi, Taekyoung Kwon, Yanghee Choi

Research output: Contribution to journalReview articlepeer-review

114 Citations (Scopus)


With the advance of wireless local area network (WLAN) technology, handoff support has become one of the most important issues in IEEE 802.11 WLANs. However, the current IEEE 802.11 specification does not provide the fast handoff required for real-time multimedia applications. To support fast handoff in IEEE 802.11 networks, a number of fast-handoff schemes have been proposed in the literature. In this article we review these fast-handoff schemes and analyze their advantages and disadvantages qualitatively. After that, important design considerations for mobility support in future IEEE 802.11 networks are suggested. Also, we introduce a fast-handoff framework which adaptively meets different application requirements via a cross-layer approach.

Original languageEnglish
Pages (from-to)2-12
Number of pages11
JournalIEEE Communications Surveys and Tutorials
Issue number1
Publication statusPublished - 2007 Mar

Bibliographical note

Funding Information:
The authors would like to thank the anonymous reviewers for their constructive comments and Minho Shin for providing his measurement results in Table 1. This work was supported in part by the Brain Korea 21 project of the Ministry of Education and in part by the Korea Research Foundation under grant no. M01-2005-000-10073-0, 2006, Korea.

Funding Information:
SANGHEON PACK [M] ( received B.S. (2000, magna cum laude) and Ph.D. (2005) degrees from Seoul National University, both in computer engineering. Since March 2007, he has been an assistant professor in the School of Electrical Engineering, Korea University, Korea. From July 2006 to February 2007, he was a post doctorial fellow in Seoul National University, Korea. From July 2005 to June 2006, he was a post doctorial fellow in the Broadband Communications Research (BBCR) Group at University of Waterloo, Canada. From 2002–2005, he was a recipient of the Korea Foundation for Advanced Studies (KFAS) Computer Science and Information Technology Scholarship. He also has been a member of Samsung Frontier Membership (SFM) from 1999. He received a student travel grant award for the IFIP Personal Wireless Conference (PWC) 2003. He was a visiting researcher to Fraunhofer FOKUS, Germany in 2003. He was listed in Marquis Who’s Who of Emerging Leader, 2007. His research interests include mobility management, multimedia transmission, vehicular networks, and QoS provision issues in the next-generation wireless/mobile networks. He is a member of the ACM.

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of 'Fast-handoff support in IEEE 802.11 wireless networks'. Together they form a unique fingerprint.

Cite this