QoS-guarantee method for public wireless LAN access environments

This paper proposes a frame queuing algorithm to improve scalability and manageability for the quality of service (QoS) guaranteed wireless LAN (WLAN) access point (AP) using a simple mechanism. The IEEE 802.11e standard can be used as QoS-guarantee technology in the existing WLAN communication. However, if a lot of terminals access the same AP such as in a public WLAN access environment, an AP that supports the IEEE 802.11e standard cannot provide adequate QoS-guaranteed communication. This is because the AP´s capability depends on the allocated communication time of wireless channels per unit of time, and the allocated time is determined by the WLAN´s physical data speed and the frame size of the service application. So we propose a frame queuing algorithm considering these features of WLAN´s commutation and apply it to the 802.11e standard. And we evaluate it by the computer simulation and confirm its advantage.