Supporting an assisted satellite based positioning

A computer readable medium stored with instructions that, when executed by a processor performs:

• converting received parameters of a dedicated orbit model into parameters of a common orbit model, wherein said dedicated orbit model is defined for a particular satellite based positioning system, wherein said common orbit model is defined in common for at least two different satellite based positioning systems including at least two of Galileo system, Global Positioning System and Global Orbiting Navigation Satellite System, wherein said dedicated orbit model with said received parameters describes a movement of a particular satellite of said particular satellite based positioning system and wherein said common orbit model with said converted parameters describes a movement of said particular satellite of said particular satellite based positioning system;
• and
• providing said converted parameters as a part of assistance data for satellite based positioning for transmission to a mobile device.

An apparatus comprising a processing unit and implemented software code, the processing unit with the software code being configured to cause the apparatus to perform

• convert received parameters of a dedicated orbit model into parameters of a common orbit model, wherein said dedicated orbit model is defined for a particular satellite based positioning system, wherein said common orbit model is defined in common for at least two different satellite based positioning systems including at least two of Galileo system, Global Positioning System and Global Orbiting Navigation Satellite System, wherein said dedicated orbit model with said received parameters describes a movement of a particular satellite of said particular satellite based positioning system and wherein said common orbit model with said converted parameters describes a movement of said particular satellite of said particular satellite based positioning system, and
• provide said converted parameters as a part of assistance data for satellite based positioning for transmission to a mobile device.

An apparatus comprising:

• means, implemented at least partly in hardware, for converting received parameters of a dedicated orbit model into parameters of a common orbit model, wherein said dedicated orbit model is defined for a particular satellite based positioning system, wherein said common orbit model is defined in common for at least two different satellite based positioning systems including at least two of Galileo system, Global Positioning System and Global Orbiting Navigation Satellite System, wherein said dedicated orbit model with said received parameters describes a movement of a particular satellite of said particular satellite based positioning system and wherein said common orbit model with said converted parameters describes a movement of said particular satellite of said particular satellite based positioning system, and
• means, implemented at least partly in hardware, for providing said converted parameters as a part of assistance data for satellite based positioning for transmission to a mobile device.