Method and apparatus for determining downlink beam forming vectors in hierarchical cell communication system

Communication method of macro base station and micro base station for interference control

Multi-cell communication apparatus and method using rate-splitting scheme and transmission frame

System and method for aligning interference in uplink

Method and apparatus of controlling inter cell interference based on cooperation of intra cell terminals

Cognitive inter-cell interference control method and apparatus

Method and apparatus for aligning interference using a feed forward index in a hierarchical cell communication system

Communication system of performing uplink communication and downlink communication using overlapping radio resource

Beamforming method and apparatus for using rate splitting scheme in multi-cell multi-antenna interference channel

Communication apparatus and precoding method based on multiple cells and multiple users