Performance Analysis of IEEE 802.11e (EDCF) and IEEE 802.11(DCF) WLAN Incorporating Different Physical Layer Standards

  • V. Sharma
  • H. Singh
  • J. Malhotra
Original Contribution


Medium access coordination function basically implements the distributed coordination function (DCF) which provides support to best effort services but limited to QoS services. Subsequently, a new standard, namely enhanced distributed channel access (EDCA) is reported. The IEEE 802.11e (EDCA) defines MAC procedures to support QoS requirements which specifies distributed contention based access scheme to access the shared wireless media. This paper evaluates the performance of EDCA based IEEE 802.11 WLAN for various access categories (ACs) using OPNET™ Modeller 14.5. Further, the computed results are compared with DCF protocols in terms of QoS parameters. Furthermore, the simulative observation is reported at data rate of 54 Mbps using different physical layer protocols such as IEEE 802.11a/b/g to stumble on the best one to be implemented with EDCF to achieve improved QoS.


Enhanced distributed channel access (EDCA) Distributed coordination function (DCF) Point coordination function (PCF) Quality of services (QoS) 


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Copyright information

© The Institution of Engineers (India) 2013

Authors and Affiliations

  1. 1.Shaheed Bhagat Singh State Technical CampusFerozepurIndia
  2. 2.DAVIETJalandharIndia

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