A communication terminal device capable of increasing the success rate of reconnection while suppressing signal volume. A communication terminal (100) connects to and communicates with any cell from among a plurality of cells under the control of a base station. A neighboring cell information decoding unit (105) acquires neighboring cell information from a cell that is currently connected. A neighboring cell searching unit (106), when reconnection with a cell becomes necessary, initiates the search for a cell, while detecting from among the cells in the neighboring cell information the cell coinciding with a cell detected by the search as the cell to be reconnected. A reconnection request information generating unit (107) generates a reconnection request message for the cell to be reconnected, which is detected by the neighboring cell searching unit (106).