FIELD: information technology.
SUBSTANCE: wireless local network (WLAN) consists of a first device and second device. The first device sends the first frame window, including the first transfer indicator, which indicates that, the service interval should start at a certain time. The second device sends confirmation from the second device to the first device, indicating receipt of the first transfer indicator. The first device sends the second frame window, including another first transfer indicator, if, after the prescribed period of time, confirmation is not received by the first device. The first device also sends the last transfer indicator, which indicates that, the service interval is finished at a certain time.
EFFECT: synchronism between the first and second devices relative the beginning and end of the service interval.
20 cl, 4 dwg
