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QoS Guaranteed Fast Handoff Algorithm for Wireless LAN  

신일희 (아주대학교 전자공학과)
이채우 (아주대학교 전자공학과)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.40, no.12, 2003 , pp. 59-70 More about this Journal
Abstract
Proposed CCRSVP (Candidate Casting RSVP) algorithm is a new fast handoff method which uses advanced multicasting method and RSVP for IEEE 802.11 Wireless LAN (WLAN) environments. The proposed algorithm shows good performance in the handoff latency and the B/W efficiency aspect and guarantees QoS because it uses L2 information (BSSID) of WLAN and starts to reserve resources and multicast packets before L2 handoff completes. We also propose a Markov chain performance analysis model in which we can analyze the handoff performance of various handoff algorithms. Using the model, we compare bandwidth efficiency of the proposed algorithm with existing handoff algorithms which use RSVP by analyzing blocking probability of session, resource usage, and the average number of ongoing session in a cell. The results show that the proposed algorithm shows better performance than the existing algorithms in the above three performance aspects.
Keywords
Handoff; RSVP; QoS; Mobile IP; WLAN;
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Times Cited By KSCI : 1  (Citation Analysis)
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