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As demand for deployment and usage is increased in WLAN environment, achieving satisfactory throughput is one of the challenging issues. Initially as WLAN environment is data centric, the best effort delivery based protocol serve the purpose up to certain extent. With multimedia traffic protocol fails to deliver required traffic. The requirement of satisfactory network performance is delivery of QoS. The QoS demand controlled jitter and delay, dedicated bandwidth etc. This triggers various approaches of modifying existing protocol to achieve acceptable throughput to satisfy user requirement. In this paper, the authors will discuss how WLAN MAC protocol responds to network traffic and the shortcomings of existing protocol while responding it.
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