Patent ID: 8995346
Filing Date: 2015-03-31
Classification: H04L,H04W

Abstract:
1. A wireless communication apparatus that performs access control which starts transmission after a backoff time passes since an available state of a channel is detected through carrier sense, the backoff time being set based on a random value selected within a contention window width, the wireless communication apparatus comprising: a remaining time calculating unit configured to calculate a remaining time until a request delay time time-outs after data is generated; and a setting unit configured to set the contention window width according to the remaining time calculated by the remaining time calculating unit, wherein the random value is generated using a probability density function of the random value, wherein an expectation value of the probability density function is set according to the remaining time calculated by the remaining time unit, and wherein the expectation value of the probability density function set according to a first remaining time is smaller than that set according to a second remaining time.