QoS support in the UMTS/GPRS backbone network using DiffServ

TitleQoS support in the UMTS/GPRS backbone network using DiffServ
Publication TypeConference Paper
Year of Publication2002
AuthorsAgharebparast, F., and V. C. M. Leung
Conference NameGlobal Telecommunications Conference, 2002. GLOBECOM '02. IEEE
Pagination1440 - 1444 vol.2
Date Publishednov.
Keywords3G mobile communication, admission control, backbone bearer service, buffer management, buffer storage, Differentiated Services, DiffServ, end-to-end QoS support, General Packet Radio Service, hierarchical QoS architecture, Internet, mobile computing, packet radio networks, QoS interworking, QoS mapping, QoS provisioning, quality of service, router configurations, scalable IP-based technology, scheduling, service classes, telecommunication congestion control, telecommunication network management, telecommunication network routing, telecommunication traffic, UMTS/GPRS backbone network, Universal Mobile Telecommunications System

The Universal Mobile Telecommunications System (UMTS) has a number of service classes that require end-to-end QoS support. This requirement imposes on the design of the UMTS backbone bearer service as a part of the UMTS hierarchical QoS architecture. This paper presents a methodology for provisioning QoS in the UMS backbone network based on the Differentiated Services (DiffServ) model, a relatively simple but scalable IP-based QoS technology. This requires proper choices of QoS mapping, router configurations, and admission control. In this paper, the framework for setting a DiffServ-based backbone router as well as the requisite mapping functions for QoS interworking are addressed specifically for UMTS services. Efficient algorithms are introduced for the router model, particularly for the scheduling and buffer management components, to enhance QoS provisioning in UMTS. The effectiveness of this approach is illustrated by computer simulations.


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