Abstract: An SAE/LTE or 4G cellular telecommunications network is disclosed which comprises a plurality of eNodeBs and a network core. A plurality of mobile telecommunications devices are registered with the network and communicate with the network core via the eNodeBs. A relay is provided between the eNodeB 5 and the mobile telecommunications device to extend the radio coverage provided by the eNodeB. Channel quality measurement data are transmitted to at least one of the telecommunications devices in a link with the relay to enable the telecommunications devices to calculate the channel quality between the mobile device and the relay and/or the node.

Abstract: Controlling interference in a telecommunications network, in which data are transmitted between mobile devices and base stations in resource blocks, includes, for each of the base stations: allocating resource blocks to one of multiple resource groups, the corresponding resource blocks of each base station being in the same resource group; allocating resource groups to one of multiple transmission power values, the corresponding resource groups of each base station having different transmission power values; and allocating respective ones of the mobile devices to one of the resource groups depending upon a UE characteristic. Interference at a resource block of a resource group of a base station caused by a neighbouring base station is detected. In response thereto, an indication of the resource group subject to interference is sent to the neighbouring base station and then the transmission power value of said resource group of the neighbouring base station is selectively reduced.