The provisioning of wireless broadband services will be a key functionality of next generation wireless networks. Hereby the intelligent caching of data at strategic positions within the network will improve its performance as well as consumer satisfaction. Furthermore future wireless communication systems will integrate several heterogeneous networks which form a combined overlay network (C.W. Lee et al., 2005). For the integration of these different systems, which most likely all base on IP backbone connections, mobile IP will be employed (J. Li and H.-H. Chen, 2005). The combination of smart caching and mobile IP is therefore an obvious solution. This paper presents the advantages and performance improvements of the new approach.