Interference management scheme of ultra dense network based on clustering

In ultra dense network, full frequency reusing between small base stations can improve network throughput, but it leads to severe cell inter-interference. In order to reduce inter-base station interference, this paper first describes the degree of interference between small base stations by using the interference weight, establishes a reasonable interference map, and uses the improved sub-optimal heuristic algorithm to perform small base stations into clusters. And then sub-channel are assigned to each cluster through the channel assignment algorithm. Simulation results show that the interference management scheme in the paper can improve the spectral efficiency and increase the throughput of the system while reducing the interference between small base stations.