A honeycomb structure according to the present invention has partition walls, and a number of through-holes divided from each other by the partition walls and extending in an axial direction. A master device provides a clock to the first slave device, and each slave device passes the clock to the next slave device in turn, and the last slave device returns the clock to the master device. The movable part is adapted to move a focused beam along the disk. A correcting unit corrects a position on which the sub-pattern is to be formed based on the misregistration-amount. The method may also include sending a handover message to the mobile station, the handover message indicating whether each of the plurality of target base stations is capable of providing the fast ranging opportunity to the mobile station and indicating the action time after which the target base station can send the uplink map to the mobile station.