Position location using transmitters with timing offset and phase adjustment
First Claim
1. A method of transmitting information in a wireless network to facilitate a determination of a position of a wireless mobile receiver in the wireless network, comprising:
- determining time offset information, with respect to a common clock, associated with a transmitter for signal transmission between the transmitter and the wireless mobile receiver in the wireless network;
controlling a delay time apparent at the wireless mobile receiver for the transmission signal by modifying at least a portion of a waveform of the transmission signal so as to adjust a phase of the portion of the transmission signal based on the determined time offset information; and
transmitting the adjusted transmission signal comprising the modified waveform from the transmitter to the wireless mobile receiver to enable a determination of the position of the wireless mobile device, based in part on the delay time perceived by the wireless mobile receiver;
wherein the transmission signal includes a positive or negative parameter to indicate an advancing or a delaying of the transmission signal with respect to the common clock that is based on a global positioning system signal.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods are provided for determining position location information in a wireless network. In one embodiment, timing offset information is communicated between multiple transmitters and one or more receivers. Such information enables accurate position or location determinations to be made that account for timing differences throughout the network. In another embodiment, transmitter phase adjustments are made that advance or delay transmissions from the transmitters to account for potential timing differences at receivers. In yet another embodiment, combinations of timing offset communications and/or transmitter phase adjustments can be employed in the wireless network to facilitate position location determinations.
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Citations
104 Claims
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1. A method of transmitting information in a wireless network to facilitate a determination of a position of a wireless mobile receiver in the wireless network, comprising:
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determining time offset information, with respect to a common clock, associated with a transmitter for signal transmission between the transmitter and the wireless mobile receiver in the wireless network; controlling a delay time apparent at the wireless mobile receiver for the transmission signal by modifying at least a portion of a waveform of the transmission signal so as to adjust a phase of the portion of the transmission signal based on the determined time offset information; and transmitting the adjusted transmission signal comprising the modified waveform from the transmitter to the wireless mobile receiver to enable a determination of the position of the wireless mobile device, based in part on the delay time perceived by the wireless mobile receiver; wherein the transmission signal includes a positive or negative parameter to indicate an advancing or a delaying of the transmission signal with respect to the common clock that is based on a global positioning system signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wireless positioning system for facilitating a determination of a position of a wireless mobile receiver, the system comprising:
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a processor configured to determine time offset information, with respect to a common clock, associated with a transmitter for signal transmission between the transmitter and the wireless mobile receiver in the wireless network, and for controlling a delay time apparent at the wireless mobile receiver for the transmission signal by modifying at least a portion of a waveform of the transmission signal so as to adjust a phase of the portion of the transmission based on the determined timing offset information; and a transmitter configured to transmit the adjusted transmission signal from the transmitter to the wireless mobile receiver to enable a determination of the position of the wireless mobile device in the wireless network, based in part on the delay time perceived by the wireless mobile receiver; wherein the transmission signal includes a positive or negative parameter to indicate an advancing or a delaying of the transmission signal with respect to the common clock that is based on a global positioning system signal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A machine readable non-transitory storage medium having machine executable instructions stored thereon, comprising:
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at least one instruction operable to cause a computer to determine time offset information, with respect to a common clock, associated with a transmitter for signal transmission between the transmitter and the wireless mobile receiver in the wireless network; at least one instruction operable to cause the computer to control a delay time apparent at the wireless mobile receiver for the transmission signal by modifying at least a portion of a waveform of the transmission signal so as to adjust a phase of the portion of the transmission signal based on the determined time offset information; and at least one instruction operable to cause the computer to transmit the adjusted transmission signal from the transmitter to the wireless mobile receiver to enable a determination of the position of the wireless mobile device, based in part on the delay time perceived by the wireless mobile receiver; wherein the transmission signal includes a positive or negative parameter to indicate an advancing or a delaying of the transmission signal with respect to the common clock that is based on a global positioning system signal. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. An apparatus for operating base station resources in a wireless positioning network to facilitate a determination of a position of a wireless mobile receiver via the wireless positioning network, comprising:
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means for determining time offset information, with respect to a common clock, associated with a transmitter for signal transmission between the transmitter and the wireless mobile receiver in the wireless positioning network; means for controlling a delay time apparent at the wireless mobile receiver for the transmission signal by modifying at least a portion of a waveform of the transmission signal so as to adjust a phase of the portion of the transmission signal based on the determined timing offset information; and means for transmitting the adjusted transmission signal from the transmitter to the wireless mobile receiver to enable a determination of the position of the wireless mobile device, based in part on the delay time perceived by the wireless mobile receiver; wherein the transmission signal includes a positive or negative parameter to indicate an advancing or a delaying of the transmission signal with respect to the common clock that is based on a global positioning system signal. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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53. A method of transmitting information in a wireless network, comprising:
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determining time offset information, with respect to a common clock, associated with a transmitter for signal transmission between the transmitter and a wireless mobile receiver in the wireless network; controlling a delay time apparent at the wireless mobile receiver for the transmission signal by modifying at least a portion of a waveform of the transmission signal so as to adjust a phase of the portion of the transmission signal based on the determined time offset information; and transmitting the adjusted transmission signal comprising the modified waveform from the transmitter to the wireless mobile receiver; wherein the transmission signal includes a positive or negative parameter to indicate an advancing or a delaying of the transmission signal with respect to the common clock that is based on a global positioning system signal. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65)
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66. A wireless positioning system, the system comprising:
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a processor configured to determine time offset information, with respect to a common clock, associated with a transmitter for signal transmission between the transmitter and a wireless mobile receiver in the wireless network, and for controlling a delay time apparent at the wireless mobile receiver for the transmission signal by modifying at least a portion of a waveform of the transmission signal so as to adjust a phase of the portion of the transmission based on the determined timing offset information; and a transmitter configured to transmit the adjusted transmission signal from the transmitter to the wireless mobile receiver; wherein the transmission signal includes a positive or negative parameter to indicate an advancing or a delaying of the transmission signal with respect to the common clock that is based on a global positioning system signal. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78)
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79. A machine readable non-transitory storage medium having machine executable instructions stored thereon, comprising:
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at least one instruction operable to cause a computer to determine time offset information, with respect to a common clock, associated with a transmitter for signal transmission between the transmitter and the wireless mobile receiver in the wireless network; at least one instruction operable to cause the computer to control a delay time apparent at the wireless mobile receiver for the transmission signal by modifying at least a portion of a waveform of the transmission signal so as to adjust a phase of the portion of the transmission signal based on the determined time offset information; and at least one instruction operable to cause the computer to transmit the adjusted transmission signal from the transmitter to the wireless mobile receiver; wherein the transmission signal includes a positive or negative parameter to indicate an advancing or a delaying of the transmission signal with respect to the common clock that is based on a global positioning system signal. - View Dependent Claims (80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91)
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92. An apparatus for operating base station resources in a wireless positioning network, comprising:
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means for determining time offset information, with respect to a common clock, associated with a transmitter for signal transmission between the transmitter and a wireless mobile receiver in the wireless positioning network; means for controlling a delay time apparent at the wireless mobile receiver for the transmission signal by modifying at least a portion of a waveform of the transmission signal so as to adjust a phase of the portion of the transmission signal based on the determined timing offset information; and means for transmitting the adjusted transmission signal from the transmitter to the wireless mobile receiver; wherein the transmission signal includes a positive or negative parameter to indicate an advancing or a delaying of the transmission signal with respect to the common clock that is based on a global positioning system signal. - View Dependent Claims (93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104)
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Specification