Browse Conferences
Calculation of soft handoff gain for UMTS
Defining "soft handoff gain" is not as trivial as one might think. One reason is because the soft handoff in the uplink direction is different from that in the downlink direction. Another reason is the vague context of this gain. Is it the ...
UTRA soft handover optimisation
The paper presents a comprehensive analysis of the UTRA (UMTS terrestrial radio access) soft handover performance optimisation based on computer simulations. A system level simulator based on wideband CDMA is applied in a typical UTRA vehic...
IP based services at the UMTS radio interface
The Universal Mobile Telecommunications System (UMTS) as a 3rd generation mobile telecommunications system is designed to provide mobile Internet access to the user. E-mail and World Wide Web (WWW) browsing sessions as mobile data service a...
Enabling network redundancy in the radio access network
In the current UTRAN (UMTS terrestrial radio access network) architecture, redundancy is one of the major issues, usually provided by means of robust network elements with high reliability and protection switching in the transport network. ...
Service control architecture in the UMTS IP multimedia core network subsystem
The 3rd Generation Partnership Project (3GPP) UMTS networks promise to deliver an abundance of advanced, innovative, and feature-rich applications to end-users in a 3rd generation (3G) wireless environment. A core network IP multimedia subs...
Network planning considerations for network sharing in UMTS
The objective of the paper is to illustrate the potential impacts on operating costs associated with a variety of different 'UMTS network sharing' scenarios such as sharing site locations, RNS (radio network subsystem) equipment, transmissi...
3G shared infrastructure
The paper gives an overview of the network sharing options open to 3G network operators. The drivers for network sharing are mainly economic and the need to roll out infrastructure quickly. Network sharing may always be the preferred implem...
3GPP functional and performance testing of user equipment
In 2001, two 3G networks were launched, first by NTT DoCoMo in Japan and more recently in the UK on the Isle of Man. The press had previously reported delays in several operator's network deployment schedules. The availability of appropriat...
Europe's first 3G network: a case study in design and implementation
This paper outlines the work undertaken in the design and implementation of a 3rd generation mobile telephone network in the Isle of Man. From the very beginning the Manx Telecom 3G project adopted an applications-centric design philosophy....
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