| 摘要 |
PROBLEM TO BE SOLVED: To reduce carrier collision among a plurality of communication terminals.SOLUTION: A communication terminal performs: data transmission to a master unit 3 within a transmission slot, which is a selected one slot within a plurality of slots obtained by dividing a transmission period T, predetermined with a reference time, into a plurality of slots; continuous data transmission within the same transmission slot until a response is received from the master unit 3, or until reached at a state that a response is not received n times successively if a response is not received; a slot selection process for determining a new transmission slot by randomly selecting a slot within a plurality of slots according to a predetermined probability if the state that a response is not received n times successively is reached; data transmission within the new transmission slot if the slot selection process is performed; and data transmission continuously within the same transmission slot with the transmission period T if the slot selection process is not performed. |
