Title :
Adaptive VoIP Service QoS Control based on Perceptual Speech Quality
Author :
Huang, Liang-Yi ; Chen, Yung-Mu ; Chung, Tein-Yaw ; Hsu, Chih-Hung
Author_Institution :
Dept. of Comput. Sci. & Eng., Yuan Ze Univ.
Abstract :
Integrated environment of wireless network can provide a ubiquitous and continuous communication for voice over Internet protocol (VoIP) service. However, the major problems, which VoIP performs over wireless networks, are varying delay of each packet, high packet loss rate and handoff. This paper proposed an adaptive QoS playout (AQP) algorithm to offer a high quality wireless VoIP service. AQP integrates the effect of dejitter buffer control, retransmission, and handoff delay based on the E-model. Simulation results show that AQP can reduce the lateness loss rate and improve speech quality under high frame error rate when the wireless link has small end-to-end network delay and also performs well when a handoff occurs.
Keywords :
Internet telephony; error statistics; quality of service; radio networks; transport protocols; E-model; adaptive QoS playout algorithm; adaptive VoIP service QoS control; continuous communication; dejitter buffer control; end-to-end network delay; frame error rate; handoff delay; perceptual speech quality; ubiquitous communication; voice over Internet protocol service; wireless link; wireless network; Adaptive control; Communication system control; Delay effects; Internet telephony; Jitter; Programmable control; Quality of service; Speech; Streaming media; Wireless networks; E-model; VoIP; dejitter buffer; retransmission;
Conference_Titel :
Advanced Communication Technology, The 9th International Conference on
Conference_Location :
Gangwon-Do
Print_ISBN :
978-89-5519-131-8
DOI :
10.1109/ICACT.2007.358502
