In this article, we are interested in improving the handover quality of Host Identity Protocol (HIP) in the case of micro mobility by (i) proposing the Local Rendezvous Server architecture as a first attempt to minimize the handover delay in the mobility process, (ii) introducing an adaptive early update mechanism to improve the handover quality during mobility by introducing early HIP (eHIP) and finally (iii) we propose a method that minimizes the total radio resource utilization in our architecture subject to the QoS constraints of Mobile Nodes (MNs) especially the delay of real-time applications. We prove through simulations that our scheme can achieve significant gains in terms of radio resource utilization while taking into account the mobility of MNs along with the respect of their QoS parameters for their ongoing real-time applications