A handover method according to an embodiment of the present invention includes: receiving neighboring base station information at a wireless relay station providing a wireless communication service moving together with a plurality of subscriber stations that move along the same moving path; performing scanning to check a wireless environment state of a neighboring base station using the received neighboring base station information; performing handover of the plurality of subscriber stations to a target base station as a single handover unit, when a handover condition is met during the scanning; and notifying the subscriber station of completion of handover preparation with the target base station.