Browsing by Author "San Jose, Eva Reguera"
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- Enhanced UMTS services and applications: a perspective beyond 3GPublication . San Jose, Eva Reguera; Velez, Fernando JoséThis paper addresses aspects of classification and characterisation of services in Enhanced UMTS (E-UMTS). a possible UMTS evolution, whose goal is to achieve data rates up to 8-10 Mbit/s, and support new services and applications, while giving the system much more capacity. One starts by putting the available data about target services and applications together, and by presenting different perspectives for service classification. Then, characterisation parameters are presented, and foreseen services and applications are described. Finally, a definition of E-UMTS deployment scenarios, to be used in E-UMTS performance analysis, is presented.
- Tele-traffic engineering for enhanced UMTS multi-rate applicationsPublication . San Jose, Eva Reguera; Velez, Fernando JoséThe tele-traffic behaviour of enhanced UMTS (E-UMTS) is addressed in three different scenarios - business city centre (BCC), urban and roads. E-UMTS allows data rates up to 8-10 Mb/s to be achieved, far beyond the values for UMTS. In the absence of mobility, the difference between the supported users in each of the scenarios is not relevant. However, when mobility is considered, from BCC to the other two scenarios, the difference in the number of users is higher than 50% with 75 channels per link (per cell), and decreases around 40% with 100 channels. Within each of the scenarios, while in BCC the difference is small (17% reduction), in the other scenarios the reduction is higher than 50%. When the number of channels increases 33%, from 75 to 100 channels, the number of supported users increases /spl sim/100%, from 15.6 to 32.5 in the urban scenario and from 15 to 30 in the roads one, i.e., there is a statistical multiplexing gain.