Patent ID: 8526398

Claim:
A communication terminal, comprising: a first communication means for performing a communication by a first communication system; a second communication means for performing a communication by a second communication system; a judgment means for judging whether or not the communication using the first communication means can be performed based on a preset value; and a control means for controlling the second communication means so that an active state of the second communication means is stopped when the judgment means initially judges that the communication using the first communication means can be performed due to a radio field intensity of the first communication means being equal to or above the preset value, and the active state of the second communication means is turned on or continued when the judgment means initially judges that the communication using the first communication means cannot be performed due to the radio field intensity of the first communication means being below the preset value, wherein, the judgment means, when initially judging that the communication using the first communication means can be performed due to the radio field intensity of the first communication means being equal to or above the preset value, further determines if the radio field intensity of the first communication means is in an increase trend or a decrease trend, and when the judgment means determines that the radio field intensity is in a decrease trend the judgment means predicts whether or not the radio field intensity will be equal to or smaller than a predetermined value at a later point in time, and when the judgment means predicts that the radio field intensity will be equal to or smaller than the predetermined value at the later point in time, the control means performs communication connection processing for searching for an access point to which the second communication means belongs without the communication terminal switching from performing communication by the first communication means to the second communication means.