AN AUDIO CODEC BIT-RATE CONTROL METHOD TO ASSURE THE QOS OF THE VOICE IN WLAN

摘要

A codec bit rate control method for guaranteeing QoS of voice in a wireless LAN VoIP system is provided to adjust the amount of voice data through a variable bit rate characteristic of G.729.1 in a channel deterioration situation of a wireless LAN, thereby guaranteeing QoS of voice. An AP(Access Point) collects channel state information to grasp channel occupation time of terminals connected to the AP(S230). Each terminal adjusts a codec bit rate based on a channel occupation rate of the terminals about total channel capacity(S255,S260). The adjusted codec bit rate is transmitted.