Interference Management in Heterogeneous Networks.

摘要

Deployment of low power pico base stations within the existing cellular networks can potentially increase both capacity and coverage. However, such deployments require efficient frequency allocation schemes for managing interference from the pico- and macro base stations that are located within each others transmission range. Partitioning the available frequencies between the various base stations avoids the problem of interference, but can lead to inefficient spectrum usage. This effort developed a distributed interference management frequency allocation scheme that shares frequencies between macro- and pico-base stations, and guarantees a minimum average throughput to cell users. The scheme minimizes the number of frequencies used. In the detailed simulations, the developed scheme outperforms a static frequency reuse scheme and the centralized optimal partitioning between the macro and picos. Moreover, the scheme performs on par with the centralized optimum allocation.