A method for determining the position of at least one mobile communication device that has a digital image capturing device using light-based stationary devices (70 - 120), comprising the method steps of: a) emitting light-modulated signals by at least three light-based stationary devices (70, 76, 78) whose positions are known, each of the at least three light-based stationary devices (70, 76, 78) emitting light-modulated signals which convey a position-related piece of information associated with the position of the respective light-based device; b) detecting, in the mobile communication device, the light-modulated signals emitted by the at least three light-based stationary devices (70, 76, 78), and deriving the respective position-related information from each of the detected light-modulated signals; c) evaluating, in the mobile communication device, the position-related information obtained in step b) in order to obtain the position of the respective light-based stationary device (70, 76, 78); d) determining an observation information relating to each of the at least three light-based stationary devices (70, 76, 78), using the digital image capturing device of the mobile communication device, wherein the observation information comprises an observation value for the direction of a pixel imaged in an image plane of the digital image capturing device, which represents the respective corresponding light-based stationary device, specifically to said corresponding light-based stationary device, and/or an observation value for the distance between the mobile communication device and the respective light-based stationary device; and e) estimating, in the mobile communication device, the position of the mobile communication device on the basis of the positions of the at least three light-based stationary devices and the at least three observation information by performing a spatial resection; characterized in that each of the at least three light-based stationary devices (70, 76, 78) emits light-modulated signals which convey additional information, wherein the additional information include indications about the light emission intensity currently used, and/or about the direction of emission of the respective light-based stationary device, wherein said additional information are taken into account in step e) for determining the position. a) emitting light-modulated signals by at least three light-based stationary devices (70, 76, 78) whose positions are known, each of the at least three light-based stationary devices (70, 76, 78) emitting light-modulated signals which convey a position-related piece of information associated with the position of the respective light-based device; b) detecting, in the mobile communication device, the light-modulated signals emitted by the at least three light-based stationary devices (70, 76, 78), and deriving the respective position-related information from each of the detected light-modulated signals; c) evaluating, in the mobile communication device, the position-related information obtained in step b) in order to obtain the position of the respective light-based stationary device (70, 76, 78); d) determining an observation information relating to each of the at least three light-based stationary devices (70, 76, 78), using the digital image capturing device of the mobile communication device, wherein the observation information comprises an observation value for the direction of a pixel imaged in an image plane of the digital image capturing device, which represents the respective corresponding light-based stationary device, specifically to said corresponding light-based stationary device, and/or an observation value for the distance between the mobile communication device and the respective light-based stationary device; and e) estimating, in the mobile communication device, the position of the mobile communication device on the basis of the positions of the at least three light-based stationary devices and the at least three observation information by performing a spatial resection;