Abstract
A method and apparatus for determining a reference time associated with a satellite positioning system. In turn the reference time in one embodiment may be used to determine other navigational information. Such navigational information may include for example the location/position of a satellite positioning system (SPS) receiver. In one embodiment a relative velocity between an SPS receiver and a set of one or more satellites is used to determine an offset between time as indicated by the SPS receiver and the reference time. According to another embodiment of the invention an error statistic is used to determine the reference time. According to yet another embodiment of the invention two records each representing at least a portion of a satellite message are compared to determine time. In one implementation the SPS receiver is mobile and operates in conjunction with a basestation to determine time and/or other navigational information according to one or a combination of the methods described.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC |
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| 5G,4G,3G,2G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | No | Family Member | ||||
Specification Information
Specification Information
Technologies
Family Information
| All Granted Patents In Patent Family : | ---- |
| All Pending Patents In Patent Family : | ---- |
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
| EP1306688A1 | 3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC |
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Yes | Basis Patent | |||
| EP1306688A1 | 4G,3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | Yes | Basis Patent | ||||
| EP1306688A1 | 5G,4G,3G,2G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | Yes | Basis Patent | ||||
| EP1306688A1 | 3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC |
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No | Family Member | |||
| EP1306688A1 | 4G,3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | No | Family Member | ||||
| EP1306688A1 | 5G,4G,3G,2G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | No | Family Member | ||||
| EP1306688B1 | 3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC |
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Yes | Basis Patent | |||
| EP1306688B1 | 4G,3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | Yes | Basis Patent | ||||
| EP1306688B1 | 5G,4G,3G,2G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | Yes | Basis Patent | ||||
| EP1306688B1 | 3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC |
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No | Family Member | |||
| EP1306688B1 | 4G,3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | No | Family Member | ||||
| EP1306688B1 | 5G,4G,3G,2G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | No | Family Member | ||||
| US6433731B1 | 3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC |
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| US6433731B1 | 4G,3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | Yes | Basis Patent | ||||
| US6433731B1 | 5G,4G,3G,2G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC |
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Yes | Basis Patent | |||
| US6433731B1 | 3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC |
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| US6433731B1 | 4G,3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | No | Family Member | ||||
| US6433731B1 | 5G,4G,3G,2G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC |
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| US6433731B1 | 3G | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC |
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| US6433731B1 | 4G,3G | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC | No | Family Member | ||||
| US6433731B1 | 5G,4G,3G,2G | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC |
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| US6433731B1 | Not Available | 12/06/2006 | ISLD-200612-006 | QUALCOMM INC |
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| US6433731B1 | Not Available | 11/10/2007 | ISLD-200802-002 | QUALCOMM INC |
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| US6433731B1 | Not Available | 20/12/2007 | ISLD-200802-004 | QUALCOMM INC |
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| US6433731B1 | 2G | 16/09/2010 | ISLD-201010-017 | QUALCOMM INC | No | Family Member | ||||
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Yes | Basis Patent | |||
| US2003025632A1 | 4G,3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | Yes | Basis Patent | ||||
| US2003025632A1 | 5G,4G,3G,2G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC |
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| US2003025632A1 | Not Available | 11/10/2007 | ISLD-200802-002 | QUALCOMM INC |
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Yes | Basis Patent | |||
| US6597311B2 | 4G,3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | Yes | Basis Patent | ||||
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| US6597311B2 | Not Available | 20/12/2007 | ISLD-200802-004 | QUALCOMM INC |
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No | Family Member | |||
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| EP1073914B1 | 3G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC |
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| EP1073914B1 | 5G,4G,3G,2G | 03/06/2004 | ISLD-200407-018 | QUALCOMM INC | No | Family Member | ||||
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No | Family Member | |||
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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| Declaration Date | Declaration Reference | Declaring Company | Specification Information | |||||||||
| ----- | ----- | ----- | ----- | ----- |
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Technologies
Positioning
Product
Use Cases
Wireless communication
Services
Claim
1. A method for determining a reference time associated with a satellite positioning system, said method comprising the machine-implemented steps of: estimating a position of an entity relative to a set of satellites, said estimation being associated with a first time measurement, wherein said first time measurement and said reference time differ by an offset; determining a relative velocity of said set of satellites; and based on said relative velocity of said set of satellites and said estimated position, determining said offset between said first time measurement and said reference time.
2. The method of claim 1, wherein said entity is a mobile satellite positioning system (SPS) receiver.
3. The method of claim 1, further including the step of a remote entity receiving an estimation message from said entity to indicate said estimated position, wherein said remote entity determines said offset using said estimation signal.
4. The method of claim 3, further including the step of said remote entity providing navigational information based on said offset to said entity.
5. The method of claim 4, wherein said navigational information comprises said reference time.
6. The method of claim 4, wherein said navigational information comprises the location of said entity.
7. The method of claim 3, further including the step of said remote entity performing said step of determining said relative velocity of said set of satellites. WO 99/53338 PCT/US99/07974 -22
8. The method of claim 1, further including the steps of: a remote entity performing said step of determining said relative velocity of said set of satellites; and said remote entity providing at least one of said relative velocity and data based on said relative velocity to said entity which comprises an SPS receiver; and wherein said SPS receiver determines navigational information based on said at least one of said relative velocity and data based on said relative velocity.
9. The method of claim 8, wherein said navigational information comprises said offset
10. The method of claim 8, wherein said navigational information comprises a location of said entity
11. The method of claim 1, wherein said estimated position comprises a pseudorange to said set of satellites
12. The method of claim 1, further including the steps of: a remote entity performing said step of determining said relative velocity of said set of satellites; and said remote entity providing navigational information to said entity, said navigational information being based on said relative velocity of said set of satellites
13. The method of claim 12, wherein said navigational information comprises said offset
14. The method of claim 12, wherein said navigational information comprises a location of said entity
15. The method of claim 1, further comprising the step of computing said offset by including said relative velocity of said set of satellites in set of pseudorange residual computations. WO 99/53338 PCT/US99/07974 -2316. The method of claim 15, wherein said relative velocity represents a relative velocity between said entity and said set of satellites
17. The method of claim 15, wherein said relative velocity represents a relative velocity between said entity and a remote entity
18. The method of claim 15, further comprising the step of iteratively repeating said pseudorange residual computations using a new set of data
19. The method of claim 18, wherein each one of said repeated pseudorange residual computations provides a correction to said position of said entity and said offset.
20. A method for determining a reference time associated with a satellite positioning system, said method comprising the machine-implemented steps of: an entity estimating a first value associated with a position of a set of satellites relative to said entity, said estimated first value being associated with a first time measurement, wherein said first time measurement associated with said values and said reference time associated with said satellite positioning system differ by an offset; calculating an error statistic for said first value; and based on said error statistic, determining said offset between said first time measurement and said reference time associated with said satellite positioning system.
21. The method of claim 20, further comprising the steps of: iteratively repeating said step of estimating said first value to obtain a plurality of values and a plurality of time measurements associated therewith; minimizing said error statistic for said plurality of values and said plurality of time measurements; and based on said minimized error statistic, determining said offset. WO 99/53338 PCT/US99/07974 -24
22. The method of claim 20, wherein said first value comprises a pseudorange residual value, and said error statistic includes a sum of squares of said pseudorange residual value.
23. The method of claim 22, wherein said sum of squares of said pseudorange residual value is weighted by a weight factor.
24. The method of claim 20, further including the step of determining a location of said entity based on said offset.
25. The method of claim 20, further comprising the steps of: using said offset to determine GPS system time; synchronizing said entity to said GPS system time.
26. The method of claim 20, further comprising the steps of: a remote entity performing said step of determining said error statistic; and said remote entity providing navigational information to said entity, which comprises a satellite positioning system (SPS) receiver.
27. The method of claim 26, wherein said navigational information comprises said offset.
28. The method of claim 26, wherein said navigational information comprises information to indicate a location of said SPS receiver
29. A method for determining a time associated with a satellite positioning system, said method comprising the machine-implemented steps of: an entity estimating a plurality of values associated with at least one of a relative range and a relative position between said entity and a set of satellites, wherein each of said plurality of values is associated with a respective time of measurement, wherein each time of measurement and said time associated with said satellite positioning system differ by a first offset; WO 99/53338 PCT/US99/07974 -25 determining a first set of error statistic values using each time of measurement associated with one of said plurality of values; altering each time of measurement by a second offset; determining a second set of error statistic values using said altered time of measurement; and based on said second set of error statistic values, determining said first offset.
30. The method of claim 29, wherein said step of determining said first offset comprises the step of determining a linear convergence of said second error statistic.
31. The method of claim 30, wherein said second error statistic comprises a unit variance based on said plurality of values and said second offset.
32. An apparatus for determining a reference time associated with a satellite positioning system, said apparatus comprising: a storage unit, to store a set of position values, said position values to indicate a relative position of a set of satellites, and wherein each of said set of position values is associated with a time of measurement that differs from said reference time by an offset; and a processing unit, coupled to said storage unit, to determine said offset based on said set of position values and an estimate of a relative velocity of each of said set of satellites.
33. The apparatus of claim 32, wherein said position values indicate a relative position between said set of satellites and a satellite positioning system (SPS) receiver.
34. The apparatus of claim 32, wherein said storage unit and said processing unit are included in a base station, and wherein said basestation further comprises: a communication link to provide navigation information based on said offset to a satellite positioning system (SPS) receiver. WO 99/53338 PCT/US99/07974 -26
35. The apparatus of claim 34, wherein said navigation information comprises a location of said SPS receiver.
36. The apparatus of claim 34, wherein said navigation information comprises a said relative velocity of each of said set of satellites.
37. The apparatus of claim 34, wherein said navigation information comprises a range between said SPS receiver and each of set of satellites.
38. The apparatus of claim 32, further comprising a transmitter, coupled to said processor, to allow transmission of information to an entity.
39. The apparatus of claim 38, further comprising a mobile satellite positioning system (SPS) receiver.
40. The apparatus of claim 39, wherein said entity comprises a base station to receive said information from said SPS receiver.
41. The apparatus of claim 40, wherein said information comprises values related to pseudoranges from said SPS receiver to said set of satellites.
42. A method for determining time associated with a satellite positioning system, said method comprising the steps of: storing a value to indicate a velocity of at least one satellite; and determining said time based on said value.
43. The method of claim 42, wherein the step of determining said time comprises the steps of: computing a first range value between an entity and said at least one satellite, said first range value associated with a first time error; and determining an offset based on said value and said first range value, said offset indicating said first time error. WO 99/53338 PCT/US99/07974 -27
44. The method of claim 43, further comprising the step of: determining a position of said entity based on said first range value and said first time error.
45. The method of claim 44, wherein said entity comprises a mobile satellite positioning system (SPS) receiver.
46. The method of claim 44, wherein said step of determining said position of said entity based on said first range value and said first time error is performed by a remote entity.
47. The method of claim 46, further comprising the step of said remote entity providing navigational information to said entity, wherein said navigational information comprises information related to said position of said entity.
48. A method for determining a time associated with a satellite positioning system, said method comprising the steps of: comparing a first record of at least a portion of a satellite message that is received by a first entity to a second record of said satellite message to determine a first time value, wherein said second record of said satellite message is received at a second entity; and determining a second time value based on a relative velocity of a set of satellites, wherein at least one of said first time value and said second time value indicates said time associated with said satellite positioning system.
49. The method of claim 48, wherein said first record and said second record overlap at least partially in time.
50. The method of claim 48, further comprising the step of said second entity providing said second record of said satellite message to said first entity.
51. The method of claim 50, wherein said first entity is a basestation. WO 99/53338 PCT/US99/07974 -28
52. The method of claim 50, wherein said second entity is a mobile satellite positioning system (SPS) receiver.
53. The method of claim 48, wherein said step of determining said second time value based on said relative velocity of said set of satellites comprises the steps of: determining a range value associated with a range to each of said set of satellites; and using said range value associated with said range, and said relative velocity of said set of satellites, determining said second time value.
54. The method of claim 53, wherein said range value corresponds to a pseudorange residual.
55. The method of claim 48, wherein at least one said first time value and said second time value is used to determine position of said second entity.
56. The method of claim 55, further comprising the step of selecting one of said first time value and said second time value to indicate said time associated with said satellite positioning system.
57. The method of claim 48, wherein said first time value is determined, at least in part, by use of said second time value.
58. A method for determining a time associated with a satellite positioning system, said method comprising the steps of: comparing a first record of at least a portion of a satellite message that is received by a first entity to a second record of said satellite message to determine a first time value, wherein said second record of said satellite message is received at a second entity; and determining a second time value based on a set of error statistic values, wherein at least one of said first time value and said second time value indicate said time associated with said satellite positioning system. WO 99/53338 PCT/US99/07974 -29
59. The method of claim 58, wherein said first record and said second record overlap at least partially in time.
60. The method of claim 58, further comprising the step of said second entity providing said second record of said satellite message to said first entity.
61. The method of claim 60, wherein said first entity is a basestation.
62. The method of claim 60, wherein said second entity is a mobile satellite positioning system (SPS) receiver.
63. The method of claim 60, wherein said first entity is a mobile satellite positioning system (SPS) receiver.
64. The method of claim 60, wherein said second entity is a basestation.
65. The method of claim 58, wherein said step of determining said second time value comprises the steps of: determining said set of error statistic values for each of a set of range values associated with a range between said first entity and at least one of said set of satellites; and optimizing said set of error statistic values to determine said second time value.
66. The method of claim 65, wherein each of said set of range values corresponds to a pseudorange residual.
67. The method of claim 65, wherein said set of error statistic values correspond to a variance of set of range values that are offset with respect to each other in time.']
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SUMMARY
ClaimChart-AU4180999A-STO
Patent number:AU4180999A
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.