A communication system for supporting communication between an end node of a vehicle moving along a predetermined route and a remote correspondent node via a fixed network, the communication system comprising: a plurality of wireless access points of the fixed network, each wireless access point having a directional antenna arrangement for mm wave radio communication using directional beams directed in a same first direction along the predetermined route; at least a first wireless modem and a second wireless modem arranged to establish mm wave radio communication links to wireless access points of the plurality of wireless access points, the mm wave radio communication links supporting a data session between the end node and the remote correspondent node, the first wireless modem and the second wireless modem being located on the vehicle and employing electronically steerable beamforming directional antennas for establishing the mm wave radio communication links using directional beams; wherein each wireless access point of the plurality of wireless access points is arranged to communicate with wireless modems using a frequency channel from either a first set of frequency channels or from a second set of frequency channels such that neighboring access points along the predetermined route use frequency channels from different sets of the first set of frequency channels and the second set of frequency channels; the first wireless modem is arranged to communicate using a frequency channel from the first set of frequency channels and the second wireless modem is arranged to communicate using a frequency channel from the second set of frequency channels; the wireless access points are arranged to provide directional beams providing overlapping coverage between neighboring access points along the predetermined route; and the communication system further comprises a data session controller arranged to communicate data of the data session over links provided by the first wireless modem and the second wireless modem, the data session controller being located on the vehicle; and wherein the first wireless modem and the second wireless modem are arranged to form beams having a main direction constrained to an angular interval not exceeding 90 ° from a movement direction of the vehicle. a plurality of wireless access points of the fixed network, each wireless access point having a directional antenna arrangement for mm wave radio communication using directional beams directed in a same first direction along the predetermined route; at least a first wireless modem and a second wireless modem arranged to establish mm wave radio communication links to wireless access points of the plurality of wireless access points, the mm wave radio communication links supporting a data session between the end node and the remote correspondent node, the first wireless modem and the second wireless modem being located on the vehicle and employing electronically steerable beamforming directional antennas for establishing the mm wave radio communication links using directional beams; wherein each wireless access point of the plurality of wireless access points is arranged to communicate with wireless modems using a frequency channel from either a first set of frequency channels or from a second set of frequency channels such that neighboring access points along the predetermined route use frequency channels from different sets of the first set of frequency channels and the second set of frequency channels; the first wireless modem is arranged to communicate using a frequency channel from the first set of frequency channels and the second wireless modem is arranged to communicate using a frequency channel from the second set of frequency channels; the wireless access points are arranged to provide directional beams providing overlapping coverage between neighboring access points along the predetermined route; each wireless access point of the plurality of wireless access points is arranged to communicate with wireless modems using a frequency channel from either a first set of frequency channels or from a second set of frequency channels such that neighboring access points along the predetermined route use frequency channels from different sets of the first set of frequency channels and the second set of frequency channels; the first wireless modem is arranged to communicate using a frequency channel from the first set of frequency channels and the second wireless modem is arranged to communicate using a frequency channel from the second set of frequency channels; the wireless access points are arranged to provide directional beams providing overlapping coverage between neighboring access points along the predetermined route; and the communication system further comprises a data session controller arranged to communicate data of the data session over links provided by the first wireless modem and the second wireless modem, the data session controller being located on the vehicle; and wherein the first wireless modem and the second wireless modem are arranged to form beams having a main direction constrained to an angular interval not exceeding 90 ° from a movement direction of the vehicle.