A RADIO BASE STATION AND A METHOD THEREIN

摘要

Embodiments herein relate to a method in a radio base station (12) for providing radio coverage to a user equipment (10). The radio base station (12) comprises at least two radio antenna ports; a first antenna port (AP11) associated with a first physical antenna and a second antenna port (AP12) associated with a second physical antenna. The first antenna port (AP11) is arranged to provide a radio coverage over a first area (14) and the second antenna port (AP12) is arranged to provide a radio coverage over a second area (17). The radio base station (12) broadcasts a signal with system information over the first area (14) enabling the radio base station (12) to connect to the user equipment (10). The radio base station (12) also determines that a user equipment (10) in the first area (14) is to receive or transmit data. The radio base station (12) then obtains information related to a position of the user equipment (10) in the first area (14). The radio base station (12) then sets a characteristic of the second physical antenna based on the obtained information. Thereby to the radio base station provides radio coverage to the user equipment (10) via the second port (AP12).