Title :
Self-Optimizing Load Balancing With Backhaul-Constrained Radio Access Networks
Author :
Tall, Abdoulaye ; Altman, Zwi ; Altman, Eitan
Author_Institution :
Orange Labs., Issy-les-Moulineaux, France
Abstract :
Self-organizing network (SON) technology aims at autonomously deploying, optimizing and repairing radio access networks (RANs). SON algorithms typically use key performance indicators (KPIs) from the RAN. It is shown that in certain cases, it is essential to take into account the impact of the backhaul state in the design of the SON algorithm. We revisit the base station (BS) load definition taking into account the backhaul state. We provide an analytical formula for the load along with a simple estimator for both elastic and guaranteed bit-rate (GBR) traffic. We incorporate the proposed load estimator in a self-optimized load balancing (LB) algorithm. Simulation results for a backhaul constrained heterogeneous network illustrate how the correct load definition can guarantee a proper operation of the SON algorithm.
Keywords :
radio access networks; telecommunication traffic; backhaul constrained heterogeneous network; backhaul-constrained radio access networks; base station; guaranteed bit-rate traffic; load estimator; self-optimized load balancing algorithm; self-optimizing load balancing; self-organizing network; Algorithm design and analysis; Heterogeneous networks; Load management; Long Term Evolution; Mobile communication; Radio access networks; Self-organizing networks; Backhaul; LTE; Load Balancing; SON; Self-Organizing Networks; backhaul; backhaul-constrained load balancing; load balancing; self-organizing networks;
Journal_Title :
Wireless Communications Letters, IEEE
DOI :
10.1109/LWC.2015.2477499
