METHOD AND APPARATUS FOR CONTROLLING INTERFERENCE FOR UPLINK AND DOWNLINK IN MULTI-TIER HETEROGENEOUS NETWORK WITH IN-BAND WIRELESS BACKHAUL

摘要

A method and apparatus for controlling uplink and downlink interference in a multilayer heterogeneous network using in-band wireless backhaul are provided. According to an embodiment, a method for controlling uplink downlink of a multi-layer heterogeneous network using an in-band wireless backhaul may include a channel information of a wide cell base station from small cell base stations, a minimum target transmission rate of each user terminal ( receiving information about a target rate) condition and a power limit condition; Performing centralized interference control for beamforming and power allocation of the entire network using channel information in the wide cell base station; And transferring the optimized parameters for the beamforming and the power allocation to the corresponding small cell base stations, respectively. Multi-layer heterogeneous using in-band wireless backhaul according to another embodiment. The uplink and downlink interference control method of the network includes performing distributed interference control by each small cell base station to optimize beamforming and power distribution using location information of the small cell base stations without the assistance of a wide cell base station. It can be done by.