Resource reservation in wired networks is a relatively mature area, with some available solutions already on the market. Due to the increasingly growing diffusion of mobile terminals and services, the study of the issues concerning the management of mobility in IP-based networks is also arising increasing interest. The combination of both issues is however still at its initial definition. This work is based on the idea of combining mobile architectures with the available techniques for resource reservation. In particular, we have created a cellular IP-based architecture, which can assure some agreed levels of QoS (for instance, in terms of data throughput) according to the IP layer. We present the proposed architecture, describe its implementation and show some experimental results for its validation.