Delay analysis of IEEE 802.11e EDCA with enhanced QoS for delay sensitive applications

The performance of IEEE 802.11e enhanced distributed channel access (EDCA) mechanism effects by the network loads. It is observed that when the number of users increases in each access category, the delay significantly increased in EDCA algorithm. The performance improvement in EDCA algorithm in fluctuating network load is a challenging task. To improve the performance of EDCA algorithm for delay sensitive services, we propose an adaptive contention window algorithm, which adjusts the contention window with the number of user in each access category. We introduce a simple but novel model for delay analysis based on EDCA mechanism. The proposed model analyzes the quality of service for the delay-sensitive applications such as voice and video. The simulation result verifies the significance of the proposed model compared to the EDCA model.

[1]  Voon Chin Phua,et al.  Wireless lan medium access control (mac) and physical layer (phy) specifications , 1999 .

[2]  Claude Castelluccia,et al.  Differentiation mechanisms for IEEE 802.11 , 2001, Proceedings IEEE INFOCOM 2001. Conference on Computer Communications. Twentieth Annual Joint Conference of the IEEE Computer and Communications Society (Cat. No.01CH37213).

[3]  Zhen Wang,et al.  Design and Analysis of a Prioritized Adaptive Multiple Access Scheme for VoIP over WLANs , 2014, 2015 IEEE Global Communications Conference (GLOBECOM).

[4]  Jose Miguel Villalón Millán,et al.  Dynamic AIFSN tuning for improving the QoS over IEEE 802.11 WLANs , 2015, 2015 International Wireless Communications and Mobile Computing Conference (IWCMC).

[5]  Azzedine Boukerche,et al.  A novel collision probability based adaptive contention windows adjustment for QoS fairness on ad hoc wireless networks , 2012, 2012 IEEE Global Communications Conference (GLOBECOM).

[6]  Eun-Chan Park,et al.  Hybrid Control of Contention Window and Frame Aggregation for Performance Enhancement in Multirate WLANs , 2015, Mob. Inf. Syst..

[7]  Sunghyun Choi,et al.  Two-level protection and guarantee for multimedia traffic in IEEE 802.11e distributed WLANs , 2009, Wirel. Networks.

[8]  Theodore Antonakopoulos,et al.  CSMA/CA performance under high traffic conditions: throughput and delay analysis , 2002, Comput. Commun..

[9]  Abraham O. Fapojuwo,et al.  A new call admission control method for providing desired throughput and delay performance in IEEE802.11e wireless LANs , 2007, IEEE Transactions on Wireless Communications.

[10]  Anirudha Sahoo,et al.  A Contention Window Based Differentiation Mechanism for providing QoS in Wireless LANs , 2006, 9th International Conference on Information Technology (ICIT'06).

[11]  Yan Gao,et al.  Feasibility and optimization of delay guarantees for non-homogeneous flows in IEEE 802.11 WLANs , 2011, 2011 Proceedings IEEE INFOCOM.

[12]  Olav N. Østerbø,et al.  Queueing Delay Analysis of IEEE 802.11e EDCA , 2006 .