Patent attributes
The present invention relates to a wireless communication node (1) comprising at least one antenna arrangement (2, 3, 4). Each antenna arrangement (2, 3, 4) comprises at least three antenna devices (5, 6, 7, 8), comprising corresponding pairs of antenna ports (A, B, C, D) with a corresponding first and second antenna port (P1A, P1 B, P1 C, P1D; P2A, P2B, P2C, P2D). Each antenna port (P1A, P1 B, P1C, P1D; P2A, P2B, P2C, P2D) is arranged downlink and uplink and is connected to a corresponding radio transceiver unit (11, 12, 13, 14, 15, 16, 17, 18). Each antenna device (5, 6, 7, 8) comprises at least one corresponding dual polarized antenna element (19, 20, 21, 22) arranged for transmitting and receiving signals at a first polarization (P1) via the corresponding first antenna port (P1A, P1B, P1 C, P1 D) and for transmitting and receiving signals at a second polarization (P2) via the corresponding second antenna port (P2A, P2B, P2C, P2D). A beamforming arrangement (23) is arranged to apply beamforming on downlink signals. For an adaptive mode of operation for downlink, the beamforming arrangement (23) is arranged to apply beamforming such that one or two antenna beams (48a, 48b) is/are directed in a first direction (49), and such that one or two antenna beams (32a, 32b) is/are directed in a second direction (33).
