			Home About us Contact

General Packet Radio Service (general + packet_radio_service)

Distribution by Scientific Domains

Engineering	50%

Selected Abstracts

Quality of service in UMTS wireless networks

BELL LABS TECHNICAL JOURNAL, Issue 2 2002
Suresh Kumar
This paper presents the realization of quality of service (QoS) in the Universal Mobile Telecommunications System (UMTS) network. The paper introduces an overview of the UMTS network structure that is an evolution of the Global System for Mobile Communications/General Packet Radio Service (GSM/GPRS) along with the motivation for providing QoS, as well as the QoS model in UMTS. Additionally, relevant considerations in delivering successful end-to-end QoS across a UMTS network are discussed. We also discuss trends toward QoS along with core concepts of QoS. The paper concludes with an outline of ongoing exploration of potential areas for future work. © 2002 Lucent Technologies Inc. [source]

Prioritisation of data partitioned MPEG,4 video over mobile networks,

EUROPEAN TRANSACTIONS ON TELECOMMUNICATIONS, Issue 3 2001
Stewart T. Worrall
Despite much research in the field of mobile multimedia, delivery of real,time,interactive video over noisy wireless channels remains a challenging problem. Two of the major issues in providing true end,to,end mobile multimedia capability are interoperability between platforms and networks and the poor performance of video compression algorithms in error,prone environments. This paper presents a method for prioritising data partitioned MPEG,4 video in a way suitable for transmission over a mobile network. The effectiveness of the technique is demonstrated by examining the performance when transmitted using the Real,Time Transport protocol over GPRS (General Packet Radio Service) data channels under varying channel conditions. [source]

GPRS random access channel performance over the Geostationary Mobile Satellite Standard

INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS AND NETWORKING, Issue 6 2001
Daniel A. Voce
The performance of the General Packet Radio Service (GPRS) random access channel as applied to the newly proposed Geostationary Mobile Satellite Standard (GMSS) is analysed. This standard adapts the GSM air interface to a geostationary satellite network. The channel is studied using analytical techniques. Copyright © 2001 John Wiley & Sons, Ltd. [source]

The support of mobile internet applications in UMTS networks through the open service access

BELL LABS TECHNICAL JOURNAL, Issue 2 2001
Musa R. Unmehopa
Third-generation wireless networks are expected to enable the mobile Internet to become a reality, offering fast Internet access and high-speed data services to mobile subscribers. For network operators to allow for the rapid development of innovative value-added applications on the scale seen in the Internet today, the wireless core network needs to be opened up for third-party applications provided by independent software vendors (ISVs). The Third-Generation Partnership Project (3GPP) is currently working on the production of technical specifications to provide a mechanism that would permit ISVs a standard interface to access network capabilities traditionally available to network operators. Within 3GPP, this mechanism is commonly referred to as the open service access (OSA). This open service access is predominantly targeted at Universal Mobile Telecommunications System (UMTS) networks, allowing application developers to access the feature-rich core network capabilities. This open access enables network operators to offer innovative services to their subscribers allowing the ability to differentiate themselves in a competitive market. With the imminent commercial deployment of the General Packet Radio Service (GPRS), existing fixed-line Internet service providers (ISPs) can now offer mobile Internet to end users in a UMTS environment where the responsibility of the network operator is reduced to providing IP connectivity. The increased competition from ISPs poses a big threat to the revenue stream of the network operator. This paper explores the possibilities of OSA to facilitate network operators in providing the mutual support of network capabilities and Internet content. These possibilities would allow the network operator to become a value-added mobile Internet service provider (VAM-ISP). © 2002 Lucent Technologies Inc. [source]