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학술대회 Requirements and Service Scenario for High Quality Mobile VoIP Service in Convergence Network
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이규욱, 김영선
International Conference on Advanced Communication Technology (ICACT) 2008, pp.1246-1249
Current IP based voice service has limitation of QoS owing to the packet delay, loss, and jitter. To improve voice service quality, along with providing voice mobility functions over current IP based network, service scenarios are proposed by providing seamless mobility in heterogeneous network among WiFi, 3G, 4G, mobile WiMAX. First of all, requirements for high quality mobile VoIP are mentioned in user terminal layer, network layer, service control layer, and detail service scenarios are described in registration phase, service signal phase, real service provisioning phase, and service closing phase. Currently VoIP service with WiBro and WiFi is under consideration, so proposed service scenarios will became useful guidelines for high quality mobile VoIP service in heterogeneous network.
KSP 제안 키워드
Control layer, IEEE 802.16e(Mobile wimax), Mobile VoIP, Packet Delay, Seamless mobility, Service Quality, Service Scenarios, Service control, Service provisioning, Signal phase, VoIP service