A method (1300, 1500) of wireless communication by a base station (1002, 1304, 1602), comprising: receiving (1310, 1502), from a network entity, information about a plurality of sub-regions of a region surrounding the base station (1002, 1304, 1602), the region surrounding the base station (1002, 1304, 1602) being the coverage area of the base station (1002, 1304, 1602), and the information including a density or an expected density of user equipments (1022, 1024, 1026, 1028, 1030, 1032, 1036, 1038, 1302) in each unit angular range of a plurality of unit angular ranges within the region surrounding the base station (1002, 1304, 1602); estimating a number of user equipments (1022, 1024, 1026, 1028, 1030, 1032, 1036, 1038, 1302) in each unit angular range of the plurality of unit angular ranges within the region surrounding the base station (1002, 1304, 1602), each unit angular range covering a different angular region within the region surrounding the base station (1002, 1304, 1602) and having a same angular range size; dividing (1314, 1506) the region surrounding the base station (1002, 1304) into the plurality of sub-regions based on the information received from the network entity and based on the estimated number of user equipments (1022, 1024, 1026, 1028, 1030, 1032, 1036, 1038, 1302) in each unit angular range of the plurality of unit angular ranges, wherein one region of the plurality of sub-regions covers a greater area than at least one other region of the plurality of sub-regions and wherein neighboring sub-regions overlap with each other at least in part; assigning (1316, 1508) each beam of a plurality of beams (1212, 1214, 1216, 1218, 1220) of the base station (1002, 1304, 1602) to a respective sub-region of the plurality of sub-regions; and transmitting (1318, 1510) at least one initial access signal in each direction of the plurality of beams (1212, 1214, 1216, 1218, 1220) using a respective beam of the plurality of beams (1212, 1214, 1216, 1218, 1220), each direction of the plurality of beams (1212, 1214, 1216, 1218, 1220) corresponding to a respective sub-region of the plurality of sub-regions. receiving (1310, 1502), from a network entity, information about a plurality of sub-regions of a region surrounding the base station (1002, 1304, 1602), the region surrounding the base station (1002, 1304, 1602) being the coverage area of the base station (1002, 1304, 1602), and the information including a density or an expected density of user equipments (1022, 1024, 1026, 1028, 1030, 1032, 1036, 1038, 1302) in each unit angular range of a plurality of unit angular ranges within the region surrounding the base station (1002, 1304, 1602); estimating a number of user equipments (1022, 1024, 1026, 1028, 1030, 1032, 1036, 1038, 1302) in each unit angular range of the plurality of unit angular ranges within the region surrounding the base station (1002, 1304, 1602), each unit angular range covering a different angular region within the region surrounding the base station (1002, 1304, 1602) and having a same angular range size; dividing (1314, 1506) the region surrounding the base station (1002, 1304) into the plurality of sub-regions based on the information received from the network entity and based on the estimated number of user equipments (1022, 1024, 1026, 1028, 1030, 1032, 1036, 1038, 1302) in each unit angular range of the plurality of unit angular ranges, wherein one region of the plurality of sub-regions covers a greater area than at least one other region of the plurality of sub-regions and wherein neighboring sub-regions overlap with each other at least in part; assigning (1316, 1508) each beam of a plurality of beams (1212, 1214, 1216, 1218, 1220) of the base station (1002, 1304, 1602) to a respective sub-region of the plurality of sub-regions; and transmitting (1318, 1510) at least one initial access signal in each direction of the plurality of beams (1212, 1214, 1216, 1218, 1220) using a respective beam of the plurality of beams (1212, 1214, 1216, 1218, 1220), each direction of the plurality of beams (1212, 1214, 1216, 1218, 1220) corresponding to a respective sub-region of the plurality of sub-regions.