Research Article
A VoIP QoS guarantee method applying the adaptive committed information rate to downstream service-flows in HFC network
@INPROCEEDINGS{10.1109/MSAN.2005.1489939, author={Jong-Won Park and Jin-Gyu Shin and Young-Ho Kim and Myeong-Jin Lee}, title={A VoIP QoS guarantee method applying the adaptive committed information rate to downstream service-flows in HFC network}, proceedings={1st International ICST Conference on Multimedia Services Access Networks}, publisher={IEEE}, proceedings_a={MSAN}, year={2005}, month={8}, keywords={VoIP QoS HFC DOCSIS G.107 E-model R-factor MOS CMTS CM}, doi={10.1109/MSAN.2005.1489939} }- Jong-Won Park
Jin-Gyu Shin
Young-Ho Kim
Myeong-Jin Lee
Year: 2005
A VoIP QoS guarantee method applying the adaptive committed information rate to downstream service-flows in HFC network
MSAN
IEEE
DOI: 10.1109/MSAN.2005.1489939
Abstract
This paper proposes an adaptive committed information rate (A-CIR) allocation algorithm for downstream VoIP service flows in HFC networks. Because the current DOCSIS specifications do not guarantee QoS for downstream VoIP service-flows, ACIR allocation algorithm is designed considering the minimally required rate for a VoIP connection and signaling overhead for VoIP call processing in network congestion. To verify the performance of the proposed algorithm, it is directly tested in an active HFC network and the results were presented based on the ITU-T G.107 E-model for VoIP service quality. From the results, the proposed algorithm is shown to reduce the packet loss, jitter, and delay in the HFC network and make stable VoIP service quality even in traffic congestion.
