APPARATUS AND METHOD FOR CONTROLLING TRANSMISSION RATE ACCORDING TO COLLISION IN WIRELESS LAN

摘要

A wireless LAN apparatus and method for controlling a transmission rate in consideration of collision are provided to reduce delay of an increase in a transmission rate or a reduction in the transmission rate by determining whether a data transmission failure has been caused by a channel error or data collision. A wireless LAN communicating unit(102) transmits/receives data, and transmits/receives an RTS(Request-To-Send) frame and a CTS(Clear-To-Send) frame. An RTS/CTS generating unit(104) generates the RTS frame and the CTS frame. When a data transmission is failed, a controller(100) initializes the number of successes and increases the number of failures, and when execution conditions of the RTS/CTS exchange method are met, the controller(100) executes the RTS/CTS exchange method. The controller(100) compares the number of data transmission failures and a failure number threshold value, and if the number of failures is greater than the threshold value, the controller(100) reduces the transmission rate of a wireless LAN apparatus by one step, and re-transmits data.