Assistance to a mobile sps receiver
First Claim
24. A system for computing the location of a mobile terminal satellite positioning system receiver, said computation using measurements made by said receiver when located within a region of validity, the system including means for providing the computing node with measurements from the mobile terminal satellite positioning system receiver when within the region;
- means for obtaining for a known reference point within said region, the range or ranges from the reference point to one or more satellites of the satellite positioning system;
means for representing in a limited resolution format the range or ranges by a number or numbers related to the number of ranging code repeat intervals;
means for creating a compact assistance vector from said representation or representations of ranging code repeat intervals;
means for transferring said compact assistance vector to a computing node; and
means for initializing and constraining a location computation using said compact assistance vector.
1 Assignment
0 Petitions
Accused Products
Abstract
A method is described, for use with an SPS mobile terminal receiver 102, of providing a compact assistance vector to initialise and constrain the computation of the terminal'"'"'s location within a region of validity. The compact assistance vector is provided to a computing node 108 able also to obtain measurements from a mobile terminal satellite positioning system receiver within said region. For a known reference point 104 within the region, the range or ranges from the reference point to one or more satellites 101 of the satellite positioning system are obtained. The range or ranges are represented by a number or numbers of ranging code repeat intervals in a limited resolution format. The compact assistance vector is created from the representation or representations of ranging code repeat intervals and transferred to the computing node 108. The compact assistance vector can then be used to initialise a location computation for the SPS mobile terminal receiver 102.
14 Citations
30 Claims
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24. A system for computing the location of a mobile terminal satellite positioning system receiver, said computation using measurements made by said receiver when located within a region of validity, the system including means for providing the computing node with measurements from the mobile terminal satellite positioning system receiver when within the region;
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means for obtaining for a known reference point within said region, the range or ranges from the reference point to one or more satellites of the satellite positioning system; means for representing in a limited resolution format the range or ranges by a number or numbers related to the number of ranging code repeat intervals; means for creating a compact assistance vector from said representation or representations of ranging code repeat intervals; means for transferring said compact assistance vector to a computing node; and means for initializing and constraining a location computation using said compact assistance vector. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30)
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25-1. A system according to claim 24, wherein the means for providing the computing node with measurements from the mobile terminal satellite positioning system receiver within said region includes components of one or more of a radio, cable, or network link.
Specification