This paper deals with the planning of two-layer Long Term Evolution-Advanced (LTE-A) cellular systems, taking both co-tier and cross-tier interference into account. In particular, we propose the novel Multi-level Soft Frequency Reuse (MSFR) scheme, where the users in three different regions of a macro/micro cell adopt distinct frequency segments and different transmission power levels. The optimization of power control parameters and cell association with MSFR results in a non-convex problem. We present the Iterative-MSFR (I-MSFR) scheme where the main optimization problem is divided into two sub-problems that can be subsequently solved by means of classical optimization methods. Finally, we propose two simplified schemes that achieve a comparable performance as I-MSFR in terms of utility, cell capacity, and outage conditions. I-MSFR and the simplified schemes have shown better performance than other schemes in the literature.
Scheda prodotto non validato
Scheda prodotto in fase di analisi da parte dello staff di validazione
|Titolo:||Iterative Multi-level Soft Frequency Reuse with Load Balancing for Heterogeneous LTE-A Systems|
|Appare nelle tipologie:||1.1 Articolo in rivista|
File in questo prodotto: