Title :
Considerations for VoIP Services in IEEE 802.16 Broadband Wireless Access Systems
Author :
Hong, Seung-Eun ; Kwon, Oh-Hyeong
Author_Institution :
Broadcasting Syst. Res. Group, Electron. & Telecommun. Res. Inst., Daejeon
Abstract :
IEEE 802.16 defines the air interface standard for fixed/mobile broadband wireless access (BWA) metropolitan area networks (MANs), which is expected to support quality of service (QoS) for real time application such as voice over IP (VoIP). However, three major technical problems that stand in the way are: 1) absence of MAC scheduling for supporting codecs with voice activity detector (VAD); 2) absence of mapping procedure between IEEE 802.16 service flow and network flow; 3) absence of efficient admission control for VoIP. This paper proposes two schemes, statistical UGS and UGS-rtPS combined scheduling, of MAC scheduling, addresses mapping RSVP FlowSpecs parameter into IEEE 802.16 QoS parameter, and devises simple admission control algorithm for VoIP services
Keywords :
Internet telephony; WiMax; access protocols; broadband networks; quality of service; radio access networks; scheduling; telecommunication congestion control; IEEE 802.16; MAC scheduling; QoS; RSVP FlowSpecs parameter; VoIP services; admission control algorithm; air interface standard; broadband wireless access systems; codecs; metropolitan area networks; quality of service; voice activity detector; voice over IP; Access protocols; Admission control; Codecs; Detectors; Internet telephony; Media Access Protocol; Metropolitan area networks; Physical layer; Quality of service; Scheduling algorithm; IEEE 802.16; QoS parameter mapping; VoIP; admission control; component; scheduling; voice activity detector;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-9391-0
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2006.1683030
