Abstract: A method performed by a control node (800) for determining whether two wireless devices meet a location criterion for closeness, the method comprising: obtaining (701), from the two wireless devices, measurements of a reference signal transmitted in a beam by a radio network node to a plurality of measurement points that are spatially distributed around the two wireless devices; and determining (702) whether the two wireless devices meet the location criterion based on the obtained measurements.

Abstract: A lamp reflector having a reflector body enclosing an inner space, whose peripheral wall forms a lateral surface of a geometrical body with a longitudinal axis. The reflector body has a light exit opening and a base section opposite thereto. The peripheral wall is formed by a wall section forming the base section, and, extending therefrom in the direction of the light exit opening, by circumferential adjacent segments that are separated by slots. The segments are secured to the perimeter of the reflector body via a holding ring that encloses it. On their free ends, the segments have outward angled flange sections that jointly form a circumferential flange rim. In its mounting position, the holding ring is adjacent to the flange rim and is at least force-fitted to the flange rim.

Abstract: A luminaire reflector composed of a pot-like hollow, rotationally symmetrical, frustoconical reflector body having a peripheral wall that is circularly curved in a peripheral direction and increases in diameter from a rear side up to a front light exit opening is provided. The reflector body has an outwardly bent over, annular peripheral edge web that surrounds the light exit opening and is bounded by two circles of different radii. The peripheral wall of the reflector body is longitudinally divided into two to four shell-like wall parts correspondingly curved in the shape of a circular arc in a peripheral direction, or the peripheral may be formed from one piece. Each wall part, or the unitary peripheral wall, together with a part of the annular peripheral edge web, is formed from a pre-coated sheet metal material that is strongly optically reflecting at least on the inside.