SBAS CORRECTION INFORMATION IN MS BASED AGPS SYSTEM

摘要

A method for providing a mobile station, being connected to a wireless communication system, with GPS assistance data, comprises obtaining (210) of correction data of a satellite based augmentation system. The method further comprises obtaining (220) of assistance data of an assisted global positioning system. Modified values of standard parameters of either assistance data of the assisted global positioning system or correction data of differential global positioning system, or both, are determined (230) from the correction data of the satellite based augmentation system in dependence on the assistance data of the assisted global positioning system. The modified values of the standard parameters are transmitted (240) from the core network to the mobile station. A node implementing the method and a system comprising such a node are also presented.