METHOD OF TRANSMITTING DATA BASED ON BACKOFF NUMBER CONTROL

摘要

PURPOSE: A method of transmitting data based on backoff number control is provided to set backoff numbers included in a multiple polling message by registering IDs and polling periods of stations, and to countdown the backoff numbers, then to transmit data when the backoff numbers are '0', thereby preventing collision between the stations. CONSTITUTION: A data communication system receives a multiple polling message including backoff numbers assigned in each station from an access point. The data communication system sets backoff number values of the multiple polling message to backoff numbers of the stations. The data communication system countdowns the set backoff number values, and transmits data. The stations wanting to transmit the data register IDs and polling periods in the access point. The multiple polling message includes at least one of the number of stations to be polled, the IDs or backoff numbers of the stations.