Browse Conferences
Multicasting in UMTS
Future third generation wireless network operators, such as those holding UMTS (Universal Mobile Telecommunications System) licenses will be able to deliver higher bandwidth content rich services over new infrastructure to end-users of inno...
Mobility management in mobile Internet
Efficient mobility management is essential for future communication networks due to the evident trend of increasingly mobile users. A number of mobility management schemes are introduced in the literature. However, there seem to be various ...
The effect of electrical and mechanical antenna down-tilting in UMTS networks
In an interference-limited CDMA system, network planning and the optimal installation of infrastructure components are important issues. This is not only to increase system capacity but also to allow for a smooth network operation. Whereas ...
The coexistence of WCDMA macrocell and microcell radio network layers
The introduction of a WCDMA microcell layer has implications upon inter-operator coexistence. Coexistence has been studied extensively throughout 3GPP standardisation to help ensure the appropriate specification of adjacent channel performa...
Theory and practice in 3G network planning
This paper discusses 3G network planning in a 3G network environment, and compares this to network planning for GSM. An overview of 3G network planning is then given. Network optimisation is discussed with a specific example of some work ca...
An automated UMTS site selection tool
Site selection was historically a manual task. This was possible and also efficient enough for GSM type services, as generally only coverage needed to be considered. In UMTS, many more criteria must be considered simultaneously, making the ...
Radio planning of third generation networks in urban areas
We examine some of the key issues facing radio network design engineers as they set about planning third generation networks in urban areas. 3G networks have one major difference compared with their second generation (2G) predecessors; they...
Roaming between satellite and terrestrial networks
The ETSI proposed S-UMTS system is intended to provide an important overlay to terrestrial 3rd generation networks. S-UMTS is specifically targeted at providing services in remote regions, or potentially just as important, when out of cover...
Comparing different cellular IP with Hawaii handoff schemes
The semi-soft handoff scheme for cellular IP is optimized for networks where the mobile host is able to listen/transmit to two or more base stations simultaneously for a short duration - the time that the mobile host spends in the overlap a...
Downlink soft handover gain in UMTS networks under different power control conditions
The downlink soft handover gain is analysed in UMTS networks under three different power control situations: without power control, with perfect power control and with imperfect power control. The results show that although power control in...