In the near future, a large diffusion of LTE femtocell devices in residential and enterprise environments is expected due to the simple installation and advantages in terms of high throughput. This deployment model leads to a harmful interference in both macro and femtocell tiers and to a substantial increase of energy сonsumption on entire cellular network. In this paper, we propose a fully distributed power control algorithm for LTE femtocells embedded in a macrocell area, in which each Femto Base Station (FBS) adapts its pilot power, and thus the coverage, to the on-site traffic demand. In a high-load scenario FBSs dynamically create high capacity zones under interference constraints, that permits to improve system capacity and offload more traffic from the nearby macrocell and in the same time to minimize co-channel interference in the femtocell tier. In a low-load scenario those FBSs whose presence is not essential for the proper operation of the network reside in a low power Listen Mode, that permits to achieve a relevant energy saving on entire femtocell network.
A Measurement-Based Approach for Cognitive Femtocell Networks
PANNO, Daniela Giovanna Anna;
2014-01-01
Abstract
In the near future, a large diffusion of LTE femtocell devices in residential and enterprise environments is expected due to the simple installation and advantages in terms of high throughput. This deployment model leads to a harmful interference in both macro and femtocell tiers and to a substantial increase of energy сonsumption on entire cellular network. In this paper, we propose a fully distributed power control algorithm for LTE femtocells embedded in a macrocell area, in which each Femto Base Station (FBS) adapts its pilot power, and thus the coverage, to the on-site traffic demand. In a high-load scenario FBSs dynamically create high capacity zones under interference constraints, that permits to improve system capacity and offload more traffic from the nearby macrocell and in the same time to minimize co-channel interference in the femtocell tier. In a low-load scenario those FBSs whose presence is not essential for the proper operation of the network reside in a low power Listen Mode, that permits to achieve a relevant energy saving on entire femtocell network.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.