A method of operating a mobile communications network comprising a plurality of base stations, in which each base station comprises at least one transceiver, in which a first transceiver is comprised in a first base station, in which the method comprises, at the first base station: operating the first transceiver to: transmit a first signal to serve a mobile terminal over multicast; and receive information from the mobile terminal, in which the information is a value of signal quality of a second signal received at the mobile terminal from a second transceiver that is not serving the mobile terminal; and receive further information from the mobile terminal, in which the further information includes signal quality information of the first signal received at the mobile terminal from the first transceiver and in which the further information also includes signal quality information of a third signal received at the mobile terminal from a third transceiver; on the basis of a comparison of the quality of the second signal received at the mobile terminal with a threshold, switching communications between the first transceiver and the mobile terminal from multicast to unicast; and subsequently on the basis of a comparison of the quality of the first signal and the quality of the third signal, both received at the mobile terminal, when the quality of the first signal is no longer greater than the quality of the third signal, providing to the mobile terminal an instruction ; in which the instruction instructs the mobile terminal to transition from being served by the first transceiver to being served by the third transceiver. operating the first transceiver to: transmit a first signal to serve a mobile terminal over multicast; and receive information from the mobile terminal, in which the information is a value of signal quality of a second signal received at the mobile terminal from a second transceiver that is not serving the mobile terminal; and receive further information from the mobile terminal, in which the further information includes signal quality information of the first signal received at the mobile terminal from the first transceiver and in which the further information also includes signal quality information of a third signal received at the mobile terminal from a third transceiver; transmit a first signal to serve a mobile terminal over multicast; and receive information from the mobile terminal, in which the information is a value of signal quality of a second signal received at the mobile terminal from a second transceiver that is not serving the mobile terminal; and receive further information from the mobile terminal, in which the further information includes signal quality information of the first signal received at the mobile terminal from the first transceiver and in which the further information also includes signal quality information of a third signal received at the mobile terminal from a third transceiver; on the basis of a comparison of the quality of the second signal received at the mobile terminal with a threshold, switching communications between the first transceiver and the mobile terminal from multicast to unicast; and subsequently on the basis of a comparison of the quality of the first signal and the quality of the third signal, both received at the mobile terminal, when the quality of the first signal is no longer greater than the quality of the third signal, providing to the mobile terminal an instruction ; in which the instruction instructs the mobile terminal to transition from being served by the first transceiver to being served by the third transceiver. <EOS>