1. A method, comprising:communicating, between at least one access node of a wireless network and a first terminal attached to the wireless network, on a plurality of narrowband carriers, the plurality of narrowband carriers comprising resources in a first spectrum and operating according to a first radio access technology,
wherein the first spectrum is arranged at least partly within a second spectrum on which communication between the at least one access node and a second terminal is executed on a wideband carrier, the wideband carrier comprising resources in the second spectrum and operating according to a second radio access technology different to the first radio access technology,
wherein the first spectrum and the second spectrum both comprise a shared spectrum, and
wherein the resources in the shared spectrum are flexibly allocated to either the plurality of narrowband carriers or to the wideband carrier using central scheduling across the first radio access technology and the second radio access technology such that a data rate for communicating according to the first radio access technology is flexibly adjusted.