Patent ID: 8315632
Filing Date: 2012-11-20
Classification: G01S,H04W

Abstract:
1. A method for providing position determination assisting data in a cellular communications network, comprising the steps of: receiving from each of multiple user equipments (UEs) having a global positioning system (GPS) receiver repeated determinations of a cell relation configuration and a measured high precision, GPS position of the UE, wherein the GPS position of the UE is determined using the UE's GPS receiver, wherein the cell relation configuration for each UE includes at least cell identity information of cells in which radio signals to or from the UE fulfill at least a specific radio condition criterion, forming, in a network node, for one or more of the cell relation configurations a cluster listing multiple ones of the measured high-precision, GPS positions having that cell relation configuration, wherein each cluster listing of measured high-precision, GPS positions identifies a specific geographic area; deterministically associating, in a network node, an area definition that defines a geographic location area polygon in the cellular communications network for multiple ones of the cluster listings, wherein the area definition is associated with a confidence value; and creating a database of position determination assisting data that specifies a relation between each of the multiple ones of the cell relation configurations and its deterministically associated area definition.