DocumentCode :
2487853
Title :
A delay-based ACK scheme for VoIP services in an IEEE 802.11e infrastructure network
Author :
Li, Wen-Li ; Lin, Chunhung Richard ; Ke, Chih-Heng ; Tung, Kuang-Yuan
Author_Institution :
Dept. of Comput. Sci. & Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
fYear :
2009
fDate :
26-28 Aug. 2009
Firstpage :
1
Lastpage :
2
Abstract :
In recent years, voice over Internet Protocol (VoIP) has gained much attention in wireless local area networks (WLANs). Although IEEE 802.11e has been standardized to provide voice traffic with quality of service (QoS) support, the voice quality will still be severely degraded with a large amount of best-effort traffic generated by distributed coordination function (DCF) or enhanced distributed channel access (EDCA) stations. In this paper, we propose a novel ACK mechanism called delay-based ACK (DB-ACK) scheme to protect voice traffic from legacy DCF users and AC_BE traffic by using adaptive DIFS and AIFS values at DCF and EDCA stations respectively in an 802.11e infrastructure network. We evaluate the performance of the DB-ACK scheme through extensive simulations. Simulation results show that the proposed scheme can well support the stringent QoS requirements for voice traffic while maintaining acceptable throughput for best-effort traffic.
Keywords :
Internet telephony; quality of service; telecommunication traffic; wireless LAN; AIFS; IEEE 802.11e infrastructure network; QoS; VoIP service; adaptive DIFS; delay-based ACK scheme; quality of service; voice over Internet protocol; voice traffic; wireless local area network; Computer science; Degradation; Internet telephony; Personal digital assistants; Protection; Quality of service; Telecommunication traffic; Throughput; Traffic control; Wireless LAN; ACK; IEEE 802.11e; quality of service (QoS); voice over Internet Protocol (VoIP); wireless local area network (WLAN);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications and Networking in China, 2009. ChinaCOM 2009. Fourth International Conference on
Conference_Location :
Xian
Print_ISBN :
978-1-4244-4337-6
Electronic_ISBN :
978-1-4244-4337-6
Type :
conf
DOI :
10.1109/CHINACOM.2009.5339725
Filename :
5339725
Link To Document :
بازگشت