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QoS in WLAN

IEEE 802.11e has a coordination function, which has both contention-based and contention free medium access methods, in order to support applications with Quality of Service (QoS) requirements. The contention based MAC protocol that is Enhanced Distributed Channel Access (EDCA) supports QoS however it cannot guarantee strict QoS required by real-time applications without proper tuning of QoS parameters and network control mechanisms. The performance of wireless LAN (WLAN) for real-time or delay sensitive applications can be improved by admission control and tuning QoS parameters based on the environment in which the devices operate.

















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