Adaptive Transmit Power for Wi-Fi Dense Deployments

The increasing commercial success of Wi-Fi and the wireless communication industry forecast of exponential traffic growth for the next years indicate Wi-Fi dense deployments as scenarios more and more common in the future. Wi-Fi was not designed to operate in such scenarios. Because of its contention based channel access and backoff procedure, Wi-Fi presents low channel access efficiency and sensible performance degradation in terms of user throughput for dense deployments. This paper discusses the challenges of Wi-Fi operation in dense deployment scenarios and the benefits of a proposed adaptive transmit power mechanism. Wi-Fi performance is assessed by standard compliant simulations.