A method of providing cellular telecommunications system service to a mobile communication equipment aboard a first aircraft that is airborne, wherein the method is performed by a master coordination node (400, 601) of a terrestrial cellular telecommunications system that further comprises other network nodes, the method comprising: coordinating communication from a plurality of groups of subordinate nodes (500, 701) selected from the other network nodes such that each group of subordinate nodes communicates a different layer of data to the mobile communication equipment aboard the first aircraft, wherein: each group of subordinate nodes comprises one or more other network nodes; each group of subordinate nodes is mutually exclusive of other groups of subordinate nodes; and each of the groups of subordinate nodes transmits beam steered, Doppler shift compensated downlink signals directed at the first aircraft; and wherein coordinating communication from the plurality of groups of subordinate nodes comprises: coordinating timing of transmissions from the groups of subordinate nodes so as to have signals received by the mobile communication equipment from the groups of subordinate nodes keep within a required temporal delay of a cyclic prefix in the received signals; controlling Doppler shift pre-compensation performed by each of the groups of subordinate nodes such that the mobile communication equipment aboard the first aircraft experiences a nominal carrier frequency when receiving transmissions from each of the groups of subordinate nodes; and coordinating communication parameters that control signals transmitted by each of the groups of subordinate nodes to ensure mutual compatibility of the signals transmitted by each of the groups of subordinate nodes. coordinating communication from a plurality of groups of subordinate nodes (500, 701) selected from the other network nodes such that each group of subordinate nodes communicates a different layer of data to the mobile communication equipment aboard the first aircraft, wherein: each group of subordinate nodes comprises one or more other network nodes; each group of subordinate nodes is mutually exclusive of other groups of subordinate nodes; and each of the groups of subordinate nodes transmits beam steered, Doppler shift compensated downlink signals directed at the first aircraft; and each group of subordinate nodes comprises one or more other network nodes; each group of subordinate nodes is mutually exclusive of other groups of subordinate nodes; and each of the groups of subordinate nodes transmits beam steered, Doppler shift compensated downlink signals directed at the first aircraft; and wherein coordinating communication from the plurality of groups of subordinate nodes comprises: coordinating timing of transmissions from the groups of subordinate nodes so as to have signals received by the mobile communication equipment from the groups of subordinate nodes keep within a required temporal delay of a cyclic prefix in the received signals; controlling Doppler shift pre-compensation performed by each of the groups of subordinate nodes such that the mobile communication equipment aboard the first aircraft experiences a nominal carrier frequency when receiving transmissions from each of the groups of subordinate nodes; and coordinating communication parameters that control signals transmitted by each of the groups of subordinate nodes to ensure mutual compatibility of the signals transmitted by each of the groups of subordinate nodes. coordinating timing of transmissions from the groups of subordinate nodes so as to have signals received by the mobile communication equipment from the groups of subordinate nodes keep within a required temporal delay of a cyclic prefix in the received signals; controlling Doppler shift pre-compensation performed by each of the groups of subordinate nodes such that the mobile communication equipment aboard the first aircraft experiences a nominal carrier frequency when receiving transmissions from each of the groups of subordinate nodes; and coordinating communication parameters that control signals transmitted by each of the groups of subordinate nodes to ensure mutual compatibility of the signals transmitted by each of the groups of subordinate nodes.