Patent ID: 7158078

Claim:
An apparatus for determining a position of a mobile wireless station, said apparatus comprising: a processing unit to determine the position of said mobile wireless station in accordance with: a position of a first reference wireless station, a position of a second reference wireless station, a first angular direction of the mobile wireless station being determined at said first reference wireless station, the first angular direction being directly measured relative to a first arbitrary reference direction, the first arbitrary reference direction defined relative to the first reference wireless station, and a second angular direction of the mobile wireless station being determined at the second reference wireless station, the second angular direction being directly measured relative to a second arbitrary reference direction, the second arbitrary reference direction defined relative to the second reference wireless station, which is independent of the first arbitrary reference direction, a third angular direction of the second reference wireless station being determined at the first reference wireless station, the third angular direction being directly measured relative to the first arbitrary reference direction, and a fourth angular direction of the first reference wireless station being determined at the second reference wireless station, the fourth angular direction being directly measured relative to the second arbitrary reference direction.