Title :
A novel AF+ service for VoIP applications over a Diff-Serv/MPLS network
Author :
Su, Hui-Kai ; Chen, Huan ; Wang, Chien-Yi ; Chen, Kim-Joan
Author_Institution :
Dept. of Electr. Eng., Nat. Chung-Cheng Univ., Chia-Yi, Taiwan
Abstract :
A Diff-Serv/MPLS network provides three service classes, including EF, AF, and BE classes. All of these conventional differentiated services in the Diff-Serv/MPLS network only provide one EF-class service, one AF-class service, or one BF-class service to a group of VoIP users individually. We propose a novel AF+ service model for VoIP applications over a Diff-Serv/MPLS network. The AF+ service model has the advantages of EF-class service and AF-class service simultaneously. We discuss the alternative issues of QoS, provisioned bandwidth utilization and call blocking rate concerning the AF+ service model. Our numerical results are useful for VoIP users and network manager to contract SLA and plan network resource distribution.
Keywords :
DiffServ networks; Internet telephony; bandwidth allocation; multiprotocol label switching; quality of service; telecommunication congestion control; AF-class service; AF+ service model; BF-class service; Diff-Serv/MPLS network; EF-class service; QoS; SLA; VoIP; call blocking rate; differentiated service classes; network resource distribution planning; provisioned bandwidth utilization; Bandwidth; Diffserv networks; Internet telephony; Multimedia systems; Multiprotocol label switching; Quality of service; Resource management; Telecommunication traffic; Traffic control; Wavelength division multiplexing;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1405016