1st International ICST Conference on Multimedia Services Access Networks

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
Jong-Won Park1,*, Jin-Gyu Shin1, Young-Ho Kim1, Myeong-Jin Lee2,*
  • 1: Hanaro Telecom Inc. 470-9 Sindaebang-dong, Dongjak-gu, Seoul, Korea
  • 2: Division of Electrical, Electronic, and Mechatronics, Kyungsung University, Nam-gu, Busan, Korea
*Contact email: qualitymaster@hanaro.com, mjlee@ieee.org

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.