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A Seamless Handoff Mechanism for DHCP-Based IEEE 802.11 WLANs

2007; IEEE Communications Society; Volume: 11; Issue: 8 Linguagem: Inglês

10.1109/lcomm.2007.070588

2373-7891

Jen–Jee Chen, Yu–Chee Tseng, Hung-Wei Lee,

Mobile Ad Hoc Networks

IEEE 802.11 wireless networks have gained great popularity. However, handoff is always a critical issue in this area. In this paper, we propose a novel seamless handoff mechanism for IEEE 802.11 wireless networks which support IEEE 802.11i security standard. Our approach consists of a dynamic tunnel establishing procedure and a seamless handoff mechanism. Both intra- and inter-subnet handoff cases are considered in our seamless handoff approach. Our work focuses on handoffs in DHCP-based IP networks rather than mobile IP-supported networks, but the proposed scheme can be easily tailored to mobile IP-supported networks.