Streetlights with directional antenna modules

A streetlighting system comprising a plurality of streetlights for establishing line-of-sight communication links between any two adjacent streetlights out of the plurality of streetlights in the streetlighting system;

• wherein the streetlighting system comprises:
• first streetlight out of the plurality of streetlights comprising:
• a first luminaire mounted on a first pole and configured to provide a first horizontally elongated light distribution;
• a first antenna unit comprising a first antenna module and a second antenna module wherein the first antenna module is configured to emit a first directional radio beam and the second antenna module is configured to emit a second directional radio beam;
• wherein beam axes of the first and second directional radio beams are oriented to different directions with a first mutual angle of essentially 180 degrees when projected on a horizontal plane;
• and the first and the second directional radio beams are arranged along a respective portion of the first horizontally elongated light distribution, such that directional radiation patterns of the first antenna unit are correlated to the first horizontally elongated light distribution of the first streetlight;
• and
• a second streetlight out of the plurality of streetlights comprising:
• a second luminaire mounted on a second pole and configured to provide a second horizontally elongated light distribution;
• a second antenna unit comprising a third antenna module and a fourth antenna module, wherein the third antenna module is configured to emit a third directional radio beam and the fourth antenna module is configured to emit a fourth directional radio beam;
• wherein beam axes of the third and the fourth directional radio beams are oriented to different directions with a second mutual angle when projected on the horizontal plane, and wherein 100°≤θ2≤170° or 190°≤θ2≤260°;
• and the third and the fourth directional radio beams are arranged along a respective portion of the second horizontally elongated light distribution, such that directional radiation patterns of the second antenna unit are correlated to the second horizontally elongated light distribution of the second streetlight;
• and
• wherein the first horizontally elongated light distribution is different from the second horizontally elongated light distribution.