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2004
ACM

Improving the Latency of 802.11 hand-offs using Neighbor Graphs

10 years 25 days ago
Improving the Latency of 802.11 hand-offs using Neighbor Graphs
The 802.11 IEEE Standard has enabled low cost and effective wireless LAN services (WLAN). With the sales and deployment of WLAN based networks exploding, many people believe that they will become the fourth generation cellular system (4G) or a major portion of it. However, the small cell size of WLAN creates frequent hand-offs for mobile users. If the latency of these hand-offs is high, as previous studies have shown, then the users of synchronous multimedia applications such as voice over IP (VoIP) will experience excessive jitter. The dominating factor in WLAN hand-offs has been shown to be the discovery of the candidate set of next access points. In this paper, we describe the use of a novel and efficient discovery method using neighbor graphs and non-overlap graphs. Our method reduces the total number of probed channels as well as the total time spent waiting on each channel. Our implementation results show that this approach reduces the overall probe time significantly when compa...
Minho Shin, Arunesh Mishra, William A. Arbaugh
Added 24 Dec 2009
Updated 24 Dec 2009
Type Conference
Year 2004
Where MOBISYS
Authors Minho Shin, Arunesh Mishra, William A. Arbaugh
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