The QoS Trade-off in IEEE 802.11n EDCA and DCF for Voice, Video, and Data Traffic

This study investigates a comparison between Enhanced Distribution Channel Access (EDCA) against the “legacy” IEEE 802.11 Distributed Coordination Function (DCF) method for three traffic services e.g. voice, video streaming, and data, using an NS-3 simulator. The results showed that EDCA can fix the value of end-to-end delay and jitter better against the DCF scenario. However, in contrary DCF is superior in throughput and packet loss ratio.