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.

Giambene, G., Le, V.A., Bourgeau, T., Chaouchi, H. (2017). Iterative multi-level soft frequency reuse with load balancing for heterogeneous LTE-A systems. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 16(2), 924-938 [10.1109/TWC.2016.2634536].

Iterative multi-level soft frequency reuse with load balancing for heterogeneous LTE-A systems

Giambene, Giovanni;
2017-01-01

Abstract

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.
2017
Giambene, G., Le, V.A., Bourgeau, T., Chaouchi, H. (2017). Iterative multi-level soft frequency reuse with load balancing for heterogeneous LTE-A systems. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 16(2), 924-938 [10.1109/TWC.2016.2634536].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/1002925