Title :
A Research on Adaptive QoS Technology
Author :
Tu, Chunxia ; Liu, Xiaojun ; Wu, Zhe
Author_Institution :
Sch. of Comput., Huanggang Normal Univ., Huanggang, China
Abstract :
The limitation of network bandwidth can lead to the loss of packets at the receiving end.This kind of packet loss degrades the speech quality, and causes impairments present in IP network, such as namely jitter and delay. To deal with the phenomenon that the network bandwidth changes dynamically and frequently, this dissertation presents two adaptive QoS technologies, namely dynamic speech codec and adaptive packet loss compensation strategy. During the real-time changing procedure of the bandwidth, these two technologies can dynamically adjust the loss compensation so as to guarantee QoS of the VoIP system.
Keywords :
Internet telephony; quality of service; speech codecs; speech coding; VoIP system; adaptive QoS technology; dynamic speech codec; packet loss compensation strategy; quality of service; speech quality; Bandwidth; Encoding; Feedback; IP networks; Jitter; Propagation losses; Quality of service; Speech codecs; Speech coding; Stability; Adaptive; QoS; VoIP;
Conference_Titel :
Future Computer and Communication, 2009. FCC '09. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3676-7
DOI :
10.1109/FCC.2009.44
