WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To improve throughput by properly setting an initial value of a contention window during channel congestion or inactivity. SOLUTION: A wireless communication device includes: a first means which not only counts the number of transmission successes but also resets the number of transmission failures to zero when receiving an ACK signal after packet transmission and not only counts the number of transmission failures but also resets the number of transmission successes to zero when not receiving an ACK signal within a prescribed time after packet transmission; and a second means which not only reduces an initial value CWmin of the contention window but also resets the number of transmission successes to zero when the number of transmission successes reaches a first prescribed value, and not only increases the initial value CWmin of the contention window but also resets the number of transmission failures to zero when the number of transmission failures reaches a second prescribed value. COPYRIGHT: (C)2009,JPO&INPIT