A communications device, wherein the device is configured to provide a wireless communications service for a terminal cluster that moves linearly, and the device comprises: - a baseband apparatus, configured to provide a logical cell for the terminal cluster in a linear movement process; and multiple radio frequency apparatuses, which are separately connected to the baseband apparatus, which are disposed on a linear movement route of the terminal cluster, and which are configured to provide wireless network linear coverage for the terminal cluster, wherein - a part of the multiple radio frequency apparatuses is configured to provide wireless coverage that covers the terminal cluster and that is of the logical cell, wherein the part of radio frequency apparatuses are referred to as a radio frequency apparatus group, and - the baseband apparatus is configured to dynamically change the composition of the radio frequency apparatus group, so that a position of the provided wireless coverage of the logical cell dynamically changes as the terminal cluster moves linearly, so that the logical cell remains unchanged for the terminal cluster in the linear movement process; - a respective radio frequency apparatus of the multiple radio frequency apparatuses is configured, when the terminal cluster moves to a coverage area of the respective radio frequency apparatus, to send uplink data of the terminal cluster to the baseband apparatus, and the baseband apparatus is configured to process, by using a baseband resource of the logical cell, the uplink data that is of the terminal cluster and sent by the respective radio frequency apparatus; or the respective radio frequency apparatus is further configured, when the terminal cluster moves to a coverage area of the respective radio frequency apparatus, to receive downlink data that is for the terminal cluster and obtained by performing processing by the baseband apparatus by using a baseband resource of the logical cell, and to send the downlink data to the terminal cluster. - a baseband apparatus, configured to provide a logical cell for the terminal cluster in a linear movement process; and multiple radio frequency apparatuses, which are separately connected to the baseband apparatus, which are disposed on a linear movement route of the terminal cluster, and which are configured to provide wireless network linear coverage for the terminal cluster, wherein - a part of the multiple radio frequency apparatuses is configured to provide wireless coverage that covers the terminal cluster and that is of the logical cell, wherein the part of radio frequency apparatuses are referred to as a radio frequency apparatus group, and - the baseband apparatus is configured to dynamically change the composition of the radio frequency apparatus group, so that a position of the provided wireless coverage of the logical cell dynamically changes as the terminal cluster moves linearly, so that the logical cell remains unchanged for the terminal cluster in the linear movement process; - a respective radio frequency apparatus of the multiple radio frequency apparatuses is configured, when the terminal cluster moves to a coverage area of the respective radio frequency apparatus, to send uplink data of the terminal cluster to the baseband apparatus, and the baseband apparatus is configured to process, by using a baseband resource of the logical cell, the uplink data that is of the terminal cluster and sent by the respective radio frequency apparatus; or the respective radio frequency apparatus is further configured, when the terminal cluster moves to a coverage area of the respective radio frequency apparatus, to receive downlink data that is for the terminal cluster and obtained by performing processing by the baseband apparatus by using a baseband resource of the logical cell, and to send the downlink data to the terminal cluster.