The main objective of the paper is to investigate and compare the downlink performance of different LTE heterogene-ous network (HetNet) deployment solutions. By adding small cells to the existing macro overlay, network coverage and capacity can be significantly enhanced to accommodate the fast growth of mo-bile broadband traffic. Emphasis is put on how to optimally as-sign the spectrum for the different networks layers in an evolved HetNet including outdoor and indoor small cells. The study is conducted for a “Hot-Zone” scenario, i.e. a high-traffic area within a realistic dense urban deployment. A broadband traffic volume growth by a factor of 50 compared to today’s levels is assumed. The investigated deployment schemes are outdoor pico-only, indoor femto-only and joint pico-femto deployments, all combined with an overlay macro layer. The results indicate that the best network coverage performance with a minimum user data rate of 1 Mbps is achieved when deploying small cells on dedicated channels rather than co-channel deployment. Fur-thermore, the joint pico and femto deployment turns out to be the right trade-off between increased base station density and en-hanced network capacity.
Vehicular Technology, Ieee Conference, 2012, p. 1-5
HetNet - Deployment - Coverage - Capacity
Main Research Area:
I E E E V T S Vehicular Technology Conference. Proceedings