Mobility Support in a Wireless ATM Network
This paper presents an architecture for mobility support in a wireless ATM network scenario. We first introduce a TDMA based wireless ATM system where a datalink control protocol is used to convert the wireless channel into an ATM like multi-service transport. Afterwards, a mobility support architecture is proposed to facilitate terminal mobility in an ATM network environment. We separate the end-to-end VC into static segments and dynamic segments. In the process of mobile migration, the dynamic segment is reconfigured by the mobility support network switches and base stations. We also present a method for smooth handoff and cell resequencing by transferring the wireless datalink state information between base stations. For signaling support in a mobile ATM network, enhancements of current Q.2931 protocol are proposed.
KeywordsMobile Terminal Mobility Support Wireless Link Control Handoff Process Dynamic Segment
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