In order to support seamless handovers in IP-based micro-mobility scenarios, updating a mobile user?s location information with an optimized mobility management scheme is necessary. In such a re-registration procedure, an appropriate Quality-of-Service (QoS) provisioning is required to meet end users? expectations. Security measures designed to protect network infrastructure and user data are also inevitable. Some proposals for the seamless handover support have been published and some analytic work on the their performance has been done. However, no proposal has given a complete re-registration procedure considering the security checks, QoS provisioning and mobility management. In this paper, we propose and compare several schemes for a complete re-registration procedure taking these three kinds of operations into account, analyzing their performances in terms of registration latency, packet loss, and CPU processing load at certain nodes.