Tkn Edca Model for Ns-2 Tkn Technical Reports Series

IEEE approved the 802.11 standard amendment for QoS support in 2005 after having issued 13 draft versions. Over this period, several technical changes, e.g., regarding the backoff procedure evolved. The original TKN EDCF model, published in 2003 for ns-2.26 is based on 802.11e Draft 2 respective 4 and had to be adjusted accord to the final standard amendment. The resulting novel TKN EDCA model is simply integrable into the newest version of ns2. As it is based on ns-2’s legacy WLAN model developed by the CMU group, it allows wired-cum-wireless simulations. This paper firstly describes the TKN EDCA model and shows verification results. Secondly, since investigations of in-house scenarios with smallscale fading and rate adaptation models are highly topical, an application example finally shows recent simulation results in an 802.11g/EDCA cell with rate adaptation and Ricean fading.