Patent ID: 8624778
Filing Date: 2014-01-07
Classification: G01S

Abstract:
1. A method comprising: assembling, by an apparatus, a set of parameters for a plurality of satellites belonging to at least two different satellite systems; including in said set of parameters for each of said satellites of said at least two different satellite systems a respective individual part for at least one parameter, wherein said individual part is valid only for a respective one of said satellites and wherein said individual part comprises at least one of: almanac data for said respective satellite and non-immediate information for said respective satellite; including in said set of parameters a common part for at least one parameter, wherein said common part is valid for each of said satellites belonging to at least one of said at least two different satellite systems, wherein said common part comprises a week count and a time of week as parts of reference time information that is provided specifically for at least one of almanac data and non-immediate information, and wherein said parts of reference time information are excluded from the respective individual part for the satellites belonging to said at least one of said at least two different satellite systems; and directing transmission, by said apparatus, of said assembled set of parameters in a message to a device as assistance data for a global navigation satellite system based positioning.