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Adaptive Wireless Schedulers based on IEEE 802.11e HCCA  

Joung, Jin-Oo (상명여자대학교 컴퓨터과학부)
Kim, Jong-Ho (상명여자대학교 컴퓨터과학부)
Abstract
We identify the problem of the current IEEE 802. lie HCCA (Hybrid Coordination Function Controlled Channel Access) scheduler and its numerous variations, that the queue information cannot be notified to the Hybrid Coordinator (HC) timely, therefore the uplink delay lengthens unnecessarily. We suggests a simple solution and a couple of implementation practices, namely the Adaptive Scheduler with RTS/CTS (ASR) and Adaptive Scheduler with Data/Ack (ASD). They are both further elaborated to emulate the Deficit Round Robin (DRB) scheduler. They are finally compared with existing exemplary schedulers through simulations, and shown to perform well.
Keywords
WLAN; HCCA; TXOP; DRR; Wireless DRR;
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