The UMTS specification (Release 5), a third-generation mobile system, proposes an all-IP network architecture. In the near future, UMTS will offer a variety of services to users. Some of these services, e.g. real-time services, require a certain guaranteed quality of service. Multi Protocol Label Switching (MPLS) is a technology providing means to control data flows in IP networks. MPLS has been developed with respect to wired networks. In this paper, we propose the integration of MPLS and Hierarchical Mobile IP as a mobility solution for UMTS Access Networks together with an approach to support efficient handover of mobile nodes.