Tele-traffic engineering for enhanced UMTS multi-rate applications

The 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 ∼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.