Femtocell base station clustering and logistic smooth transition autoregressive‐based predicted signal‐to‐interference‐plus‐noise ratio for performance improvement of two‐tier macro/femtocell networks

Abstract

The aim of this study is to improve the performance of two-tier macro/femtocell networks using a power control approach. In wireless networks, power control plays an important role in improving a number of performance parameters such as co-channel interference and outage probability reduction, throughput increasing, and power saving. This study explores the evolution of centralised power control algorithm based on femtocell base station (FBS) clustering and predicted signal-to-interference-plus-noise ratio (SINR) of users. To reduce the computational complexity of centralised algorithm, dense deployed femtocells are considered in different clusters. In this case, femtocells inside one cluster make considerable interference to each other, while the interferences from femtocells of other clusters are negligible. Moreover, because of the non-linearity of SINR samples, non-linear logistic smooth transition autoregressive (LSTAR) model is used to model the SINR data, and then the next SINR samples are predicted from the previous samples. A c c o r d i n gt ot h ec l u s t e r e dF B S sa n dp r e d i c t e dS I N R ,t h e proposed power control scheme is applied to femtocell network in the downlink. The results demonstrate that the introduced method improves the outage probability and throughput and outperforms previous methods significantly.

Combination of Ultra-Dense Networks and Other 5G Enabling Technologies: A Survey

“…Therefore, centralised approaches are only feasible for small-sized SCNs. An example of a centralised algorithm can be found in [228].…”

Radio resource coordination and scheduling scheme in ultra-dense cloud-based small cell networks

“…This solution converts the interference problem into a mixed integer nonlinear optimization model, and the simulation results found this algorithm to be less complex. According to the clustered small cells and predicted signal to interference plus noise ratio (SINR), the authors of [18] proposed a power control scheme applied to the downlink in the small cell network and found this method to lower the likelihood of an outage while improving throughput significantly compared to previous methods. However, these methods require considerable signaling interaction between small cells to complete the resource allocation.…”