Transmission of location information by a transmitter as an aid to location services
First Claim
1. A method for wireless communication, comprising:
- generating at a transmitter an overhead message comprising coordinate information and uncertainty information associated with the transmitter wherein the uncertainty information comprises uncertainty of a horizontal location of the transmitter; and
broadcasting the overhead message from the transmitter to terminals within coverage of the transmitter, wherein the overhead message is broadcast prior to establishing a positioning session with the terminals via a positioning protocol.
1 Assignment
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Accused Products
Abstract
Techniques for transmitting location information as an aid to location services are described. In one design, a transmitter may generate a message including coordinate information and uncertainty information for the location of the transmitter. The coordinate information may include latitude and longitude for horizontal location and possibly the height of the transmitter. The uncertainty information may include uncertainty of the horizontal location and possibly uncertainty of the height of the transmitter. The horizontal location uncertainty may be given by a radius of a circle centered at the latitude and longitude of the transmitter. The height uncertainty may be given by a deviation from the height of the transmitter. The transmitter may send the message to at least one receiver in a wireless network. The transmitter may be a base station that may broadcast the message to terminals within its coverage.
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Citations
42 Claims
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1. A method for wireless communication, comprising:
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generating at a transmitter an overhead message comprising coordinate information and uncertainty information associated with the transmitter wherein the uncertainty information comprises uncertainty of a horizontal location of the transmitter; and broadcasting the overhead message from the transmitter to terminals within coverage of the transmitter, wherein the overhead message is broadcast prior to establishing a positioning session with the terminals via a positioning protocol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for wireless communication, comprising:
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generating at a base station a unicast message comprising coordinate information and uncertainty information associated with the base station wherein the uncertainty information comprises uncertainty of a horizontal location of the base station; and sending the unicast message from the base station to a specific terminal, wherein the unicast message is sent prior to establishing a positioning session with the specific terminal via a positioning protocol.
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16. An apparatus for wireless communication, comprising:
at least one processor configured to generate at a transmitter an overhead message comprising coordinate information and uncertainty information associated with the transmitter wherein the uncertainty information comprises uncertainty of a horizontal location of the transmitter, and to broadcast the overhead message from the transmitter to terminals within coverage of the transmitter, wherein the overhead message is broadcast prior to establishing a positioning session with the terminals via a positioning protocol. - View Dependent Claims (17, 18, 19)
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20. An apparatus for wireless communication, comprising:
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means for generating at a transmitter an overhead message comprising coordinate information and uncertainty information associated with the transmitter wherein the uncertainty information comprises uncertainty of a horizontal location of the transmitter; and means for broadcasting the overhead message from the transmitter to terminals within coverage of the transmitter, wherein the overhead message is broadcast prior to establishing a positioning session with the terminals via a positioning protocol. - View Dependent Claims (21, 22, 23)
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24. A computer program product, comprising:
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a non-transitory computer-readable storage medium comprising; code for causing at least one computer to generate at a transmitter an overhead message comprising coordinate information and uncertainty information associated with the transmitter wherein the uncertainty information comprises uncertainty of a horizontal location of the transmitter, and code for causing the at least one computer to broadcast the overhead message from the transmitter to terminals within coverage of the transmitter, wherein the overhead message is broadcast prior to establishing a positioning session with the terminals via a positioning protocol.
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25. A method for wireless communication, comprising:
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generating at a base station an overhead message comprising a latitude field carrying latitude of the base station, a longitude field carrying longitude of the base station, and a horizontal location uncertainty field carrying uncertainty of the horizontal location of the base station; and broadcasting the overhead message from the base station to terminals within coverage of the base station, wherein the overhead message is broadcast prior to establishing a positioning session with the terminals via a positioning protocol. - View Dependent Claims (26, 27)
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28. A method for wireless communication, comprising:
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receiving at a terminal an overhead message generated and sent by a transmitter to at least one receiver in a wireless network, wherein the overhead message is received prior to establishing a positioning session via a positioning protocol; and obtaining coordinate information and uncertainty information associated with the transmitter from the overhead message wherein the uncertainty information comprises uncertainty of a horizontal location of the transmitter. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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36. An apparatus for wireless communication, comprising:
at least one processor configured to receive at a terminal an overhead message generated and sent by a transmitter to at least one receiver in a wireless network, wherein the overhead message is received prior to establishing a positioning session via a positioning protocol, and to obtain coordinate information and uncertainty information associated with the transmitter from the overhead message wherein the uncertainty information comprises uncertainty of a horizontal location of the transmitter. - View Dependent Claims (37, 38, 39)
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40. A method for wireless communication, comprising:
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receiving at a terminal an overhead message generated and broadcast by a base station to terminals within coverage of the base station, wherein the overhead message is received prior to establishing a positioning session via a positioning protocol; and obtaining latitude of the base station from a latitude field, longitude of the base station from a longitude field, and uncertainty of horizontal location of the base station from a horizontal location uncertainty field of the overhead message. - View Dependent Claims (41, 42)
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Specification