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Journal Article
Requirements and Service Scenario for High Quality Mobile VoIP Service in Convergence Network
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- Authors
- Kyu Ouk Lee, Sungyeol Kang
- Issue Date
- 2010-04
- Citation
- GESTS International Transactions on Computer Science and Engineering, v.59, no.1, pp.77-86
- ISSN
- 1738-6438
- Publisher
- Czech Academy of Sciences
- Language
- English
- Type
- Journal Article
- Abstract
- 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 to provide seamless mobility in heterogeneous network among WiFi, 3G, 4G, mobile WiMAX. First of all, requirements for high quality mobile VoIP are identified 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 Keywords
- Control layer, Mobile VoIP, Mobile WiMax, Network layer, Over-current, Packet Delay, Seamless mobility, Service Quality, Service Scenarios, Service control, Service provisioning