Computer Networking: A Top-Down Approach Featuring the Internet
Computer Networking: A Top-Down Approach Featuring the Internet
Real 802.11 Security: Wi-Fi Protected Access and 802.11i
Real 802.11 Security: Wi-Fi Protected Access and 802.11i
An empirical analysis of the IEEE 802.11 MAC layer handoff process
ACM SIGCOMM Computer Communication Review
Number-theoretic constructions of efficient pseudo-random functions
Journal of the ACM (JACM)
Improving the latency of 802.11 hand-offs using neighbor graphs
Proceedings of the 2nd international conference on Mobile systems, applications, and services
Fast pre-authentication based on proactive key distribution for 802.11 infrastructure networks
WMuNeP '05 Proceedings of the 1st ACM workshop on Wireless multimedia networking and performance modeling
Proactive key distribution using neighbor graphs
IEEE Wireless Communications
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The latency of the IEEE 802.11 handoff process in wireless local area network (WLAN) is much higher than 50ms. Since the bearable maximum delay is 50ms in multimedia applications, e.g., voice over IP (VOIP), such large handoff gap may bring up excessive jitter. Therefore, many researches make much effort about how to fast handoff. In this paper, we propose an accelerated handoff mechanism in which three methods are involved: (1) dynamic cluster chain, (2) PMKSA caching, and (3) fast reassociation with the pairwise transient key security association (PTKSA) establishment. Access points (APs) are arranged as a cluster for each client station (STA). APs that are cluster members can cache PMKSA of STA in advance to reduce the extensible authentication protocol - transport Layer Security (EAP-TLS) authentication delay. The dynamic cluster chain, which is arranged by a dynamic cluster selection and transition method, is proposed to assure that STA stays within a cluster. Furthermore, the fast reassociation with the PTSA establishment process incorporates four-way handshake into the IEEE 802.11 reassociation process to further accelerate handoff process.