Dense urban areas with high traffic volumes pose many challenges for wireless service providers. Finite spectrum, high costs and long time required to add more cells apply significant pressure. Add to that the high levels of RF pollution, intercell interference and even PIM combined with high densities of subscribers and focused peak demands and the challenge to meet subscriber needs is very real.
High traffic volume, density of numerous of cell sites, and introduction of small cells all contribute to noise rise and degrade SINR, the critical metric that determines network performance. Noise rise comes from normal traffic, ICI (Intercell interference), PIM, external unexpected interference, other operators and many other systems operating in adjacent spectrum.
Using RF Conditioning Network Functions, SINR can be optimized which improves network performance. RF conditioning Network Functions adaptively self optimize independently or complement antenna tilt or other OSS / SON applications.
Additional inefficiencies stealing capacity from the network are unnecessary retransmissions and ACK/NAK traffic. 5G networks are already building in new functionality to address these inefficiencies but for 4G LTE networks, network optimization can be used today to recover capacity lost to these protocol inefficiencies, boosting network capacity.
Studies show even a small percentage of poor performing cells will have a disproportionate negative impact on the network, degrading overall performance robbing network capacity. Applying RF conditioning Network Functions will optimize the network to minimize the impact of those poor performing cells and enable more traffic to be carried by the network.