Patent ID: 8515446

Claim:
A device for determining a position of the device, comprising: a receiver arranged to receive a signal of each of a plurality of transmitters; a first determiner arranged to determine reception powers of the signals of the plurality of transmitters; a provider arranged to provide a transmitter position of each of the plurality of transmitters according to the signal of each of the plurality of transmitters; and a second determiner arranged to determine a first position of the device according to the transmitter position of each of the plurality of transmitters, wherein the second determiner is further arranged to: determine a transmitter direction of each of the plurality of transmitters according to the first position and the transmitter position of each of the plurality of transmitters, combine transmitters of the plurality of transmitters, the transmitter directions of the combined transmitters fulfilling a predetermined angular proximity condition, as a virtual transmitter with a virtual transmitter position angularly lying between at least two of the combined transmitters and a virtual reception power between the reception powers of at least two of the combined transmitters, and determine a second position of the device according to the virtual transmitter position and the virtual reception power.