ARCHITECTURE AND METHOD IN A WIRELESS COMMUNICATION NETWORK

摘要

Radio network node (110) and method (400) in a radio network node (110), for wireless communication with a UE (120) in a wireless communication system (100) in antenna streams. The radio network node (110) comprises a plurality of antenna sub arrays (220), forming a multiple antenna array (215) which is configured for beamforming, spatial multiplexing and Multiple Input Multiple Output, MIMO, transmission/ reception, and further comprising an antenna base band processing unit (250) and a central base band processing unit (260). The radio network node (110) further comprises a plurality of antenna active modules (230), wherein each active antenna module (230) is connected to one of the antenna sub arrays (220), comprised in the multiple antenna array (215), and wherein each active antenna module (230) is configured for pre-processing of signals over the respective antenna sub array (220), before any for- warding of signals is made to the central base band processing unit (260).