| Publisher | Institute of Electrical and Electronics Engineers | ||
|---|---|---|---|
| Format | 447.0KB PDF | Date added | 29 Oct 2003 |
| Topics | Wi-Fi (802.11), Wireless LAN | ||
| Downloads | 126 | ||
In IEEE 802.11 wireless LANs, the DCF access method and the PCF access method operate alternatively within a superframe to service the time-varying traffic demands. Due to different medium access mechanisms deployed by DCF and PCF, they work well for some particular types of traffic scenarios respectively, while their performance may degrade under some other types of traffic demands. This paper proposes an adaptive control algorithm to keep the aggregate throughput of access points close to the best capacity of both DCF mode and PCF mode upon various traffic requests, by dynamically adjusting the duration of DCF mode and PCF mode within a superframe based on recent traffic scenarios in wireless LANs.
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