Quality of Service Enhancement for Converging Traffic in EDCA Based IEEE 802.11

Wireless local area network (WLAN) has become more popular in recent years. With increase in demand users are expecting quality of service (QoS) for multimedia services in WLAN. The legacy protocol IEEE 802.11 and IEEE 802.11e does not provide QoS and fairness for converging traffic in WLAN, so efficient management of protocols are required to provide acceptable QoS for real time traffic and fairness to best effort traffic. In this paper modified wireless token network (MWTN) is proposed to provide the required QoS by decreasing the size of the contention window (CW). This paper analyses legacy IEEE 802.11, IEEE 802.11e and wireless token network (WTN) in terms of throughput, delay, load, retransmission and data dropped performance, for converging traffic in WLAN and compare the results with proposed MWTN, to show that performance of converging traffic is improved in MWTN.