Node in a wireless communication system where antenna beams match the sector width

摘要

The present invention relates to a node in a wireless communication system (W), the node comprises an antenna arrangement with at least three physical antenna elements and a first beam-forming network. Each physical antenna element has a corresponding physical phase center and antenna port. The physical phase centers are separated by corresponding physical distances, and the physical antenna ports are connected to the first beam-forming network. The first beam-forming network is arranged to transform the physical antenna ports to at least two virtual antenna ports which correspond to virtual antenna elements. Each virtual antenna element has a certain virtual phase center where the virtual phase centers are separated by corresponding virtual distances, where the physical distances differ from the virtual distances. The present invention also relates to a corresponding method.

主权项

1. A node in a wireless communication system comprising an antenna arrangement, wherein the antenna arrangement in turn comprises at least three physical antenna elements and a first beam-forming network, each physical antenna element having a corresponding physical phase center and corresponding physical antenna port, wherein the physical phase centers are separated by corresponding physical distances and the physical antenna ports are connected to the first beam-forming network, wherein the first beam-forming network is arranged to transform said physical antenna ports to at least two virtual antenna ports, which virtual antenna ports correspond to virtual antenna elements, each virtual antenna element having a certain virtual phase center wherein the virtual phase centers are separated by corresponding virtual distances, wherein the physical distances differ from the virtual distances.