| 摘要 |
The invention relates to a base station in a mobile communication network, comprising one antenna array, sending signals bearing dedicated as well as broadcast channels into a sector of interest, beamforming means adjusting phase angle and/or amplitude of one of said signals being applied to the antenna, and a transceiver unit. To provide a base station being capable of sending directed beams as well as undirected beams, whereby the size of the base station is kept small, a base station wherein said antenna array comprises two groups of antenna elements, where one first group of antenna elements transmits at least one undirected beam, bearing at least one broadcast channel that is common for said whole sector, and where one second group of antenna elements transmits at least two directed beams, each beam bearing said dedicated channels that are intended only for a part of said sector is proposed.
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