An apparatus comprising: base station location identifying circuitry to obtain base station location information for a plurality of base stations (1505, 1510, 1515) that provide a wireless network for communication with a moving vehicle; moving vehicle tracking circuitry to obtain position and velocity information for the moving vehicle; and handover metrics computation circuitry to generate at least one handover metric computed from the position and velocity information for the moving vehicle and the base station location information, for use in determining a target base station in said plurality to be used when performing a handover procedure to transition communication with the moving vehicle from a current base station in said plurality to the target base station; wherein: the handover metrics computation circuitry is arranged to generate the at least one handover metric for each of a plurality of candidate target base stations; the at least one handover metric comprises at least one Doppler effect metric indicative of the impact the Doppler effect will have on transmitted signals between the moving vehicle and a candidate target base station; the handover metrics computation circuitry is arranged to compute, for each of the plurality of candidate target base stations, said at least one Doppler effect metric for that candidate target base station; and the at least one Doppler effect metric is an indication of a speed of change of the Doppler effect on transmitted signals between the moving vehicle and the candidate target base station. base station location identifying circuitry to obtain base station location information for a plurality of base stations (1505, 1510, 1515) that provide a wireless network for communication with a moving vehicle; moving vehicle tracking circuitry to obtain position and velocity information for the moving vehicle; and handover metrics computation circuitry to generate at least one handover metric computed from the position and velocity information for the moving vehicle and the base station location information, for use in determining a target base station in said plurality to be used when performing a handover procedure to transition communication with the moving vehicle from a current base station in said plurality to the target base station; wherein: the handover metrics computation circuitry is arranged to generate the at least one handover metric for each of a plurality of candidate target base stations; the at least one handover metric comprises at least one Doppler effect metric indicative of the impact the Doppler effect will have on transmitted signals between the moving vehicle and a candidate target base station; the handover metrics computation circuitry is arranged to compute, for each of the plurality of candidate target base stations, said at least one Doppler effect metric for that candidate target base station; and the at least one Doppler effect metric is an indication of a speed of change of the Doppler effect on transmitted signals between the moving vehicle and the candidate target base station. the handover metrics computation circuitry is arranged to generate the at least one handover metric for each of a plurality of candidate target base stations; the at least one handover metric comprises at least one Doppler effect metric indicative of the impact the Doppler effect will have on transmitted signals between the moving vehicle and a candidate target base station; the handover metrics computation circuitry is arranged to compute, for each of the plurality of candidate target base stations, said at least one Doppler effect metric for that candidate target base station; and the at least one Doppler effect metric is an indication of a speed of change of the Doppler effect on transmitted signals between the moving vehicle and the candidate target base station.