Radio base station device and radio communication method

摘要

Direction of arrival estimation sections 106a and 106b estimate directions of arrival for communication terminals. Grouping decision section 107 divides the communication terminals that belong to a sector into a plurality of groups based on the results of direction of arrival estimations. Scramble code assignment control section 114 performs assignment control in such a way that a same scramble code is assigned to channels with similar (not necessarily completely the same) directivities.