Affiliation:
1. Research Laboratory in Industrial Computing and Networks (RiiR) , University of Oran 1 , Ahmed Ben Bella, Oran , Algeria
Abstract
Abstract
The increasing use of multimedia applications in wireless ad-hoc networks makes the support of quality of service (QoS) an overriding necessity. In this article, we present a new extension of the IEEE 802.11e EDCA scheme called NCA-EDCA, which uses the lifetime and the number of retransmissions attempts of a packet to assess the aggressiveness of the environment in order to adjust the channel access parameters to work in the best possible way and improve service quality accordingly. This new extension aims to (1) improve the performance of real-time applications; (2) increase the overall throughput by reducing the collision rate and (3) achieve an acceptable level of fairness. The simulation results show that our extension significantly improves EDCA for better QoS support of multimedia applications. More specifically, it increases throughput of the different flows by no negligible factors and significantly reduces the collision rate while maintaining a high degree of fairness between flows of equal priority.
Reference17 articles.
1. [1] Al-Fuqaha, M. Guizani, M. Mohammadi, M. Aledhari, and M. Ayyash, “Internet of things: A survey on enabling technologies, protocols, and applications,” IEEE Communications Surveys and Tutorials, vol. 17, no. 4, pp. 2347–2376, Jun. 2015. https://doi.org/10.1109/COMST.2015.2444095
2. [2] M. Condoluci, G. Araniti, T. Mahmoodi, and M. Dohler, “Enabling the IoT machine age with 5G: Machine-type multicast services for innovative real-time applications,” IEEE Access, vol. 4, pp. 5555–5569, May 2016. https://doi.org/10.1109/ACCESS.2016.2573678
3. [3] IEEE Standard for Information technology--Telecommunications and information exchange between systems Local and metropolitan area networks--Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications, IEEE Std 802.11-2012, Mar. 2012. https://doi.org/10.1109/IEEESTD.2012.6178212
4. [4] S. Choi, J. D. Prado, N. Sai Shankar, and S. Mangold, “IEEE 802.11e contention-based channel access (EDCF) performance evaluation,” in IEEE International Conference on Communications, vol. 2, 2003, pp. 1151–1156.
5. [5] J. Hui and M. Devetsikiotis, “A unified model for the performance analysis of IEEE 802.11e EDCA,” IEEE Transactions on Communications, vol. 53, no. 9, pp. 1498–1510, Sep. 2005. https://doi.org/10.1109/TCOMM.2005.855013