METHODS AND APPARATUS FOR POSITION LOCATION IN A WIRELESS NETWORK
First Claim
1. A method for determining a position of a device in a network, the method comprising:
- decoding a symbol comprising subcarriers to determine identification information that identifies a transmitter, the decoding comprising partitioning the subcarriers of the symbol;
determining a channel estimate associated with the transmitter; and
repeating the decoding and the determining for a plurality of symbols so that a plurality of transmitters associated with a plurality of channel estimates, respectively, are determined.
1 Assignment
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Accused Products
Abstract
Methods and apparatus for position location in a wireless network. In an aspect, a method is provided that includes determining whether a symbol to be transmitted is an active symbol, wherein the symbol comprises a plurality of subcarriers, and encoding identification information on a first portion of subcarriers if it is determined that the symbol is the active symbol. The method also includes encoding idle information on a second portion of subcarriers if it is determined that the symbol in not the active symbol. In an aspect, an apparatus includes detector logic configured to decode a plurality of symbols to determine identification information that identifies a plurality of transmitters, and to determine a plurality of channel estimate associated with the plurality of transmitters. The apparatus also includes position determination logic configured to calculate a device position based on the plurality of transmitters and the plurality of channel estimates.
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Citations
44 Claims
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1. A method for determining a position of a device in a network, the method comprising:
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decoding a symbol comprising subcarriers to determine identification information that identifies a transmitter, the decoding comprising partitioning the subcarriers of the symbol; determining a channel estimate associated with the transmitter; and repeating the decoding and the determining for a plurality of symbols so that a plurality of transmitters associated with a plurality of channel estimates, respectively, are determined. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus for determining a position of a device in a network, the apparatus comprising:
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means for decoding a symbol comprising subcarriers to determine identification information that identifies a transmitter, the means for decoding comprising means for partitioning the subcarriers of the symbol; means for determining a channel estimate associated with the transmitter; and means for repeating the decoding and the determining for a plurality of symbols so that a plurality of transmitters associated with a plurality of channel estimates, respectively, are determined. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A computer program product for determining a position of a device in a network, the computer program product comprising:
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a non-transitory computer-readable medium having program code recorded thereon, the program code comprising; program code to decode a symbol comprising subcarriers to determine identification information that identifies a transmitter, the program code to decode comprising program code to partition the subcarriers of the symbol; program code to determine a channel estimate associated with the transmitter; and program code to repeat the decoding and the determining for a plurality of symbols so that a plurality of transmitters associated with a plurality of channel estimates, respectively, are determined. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. An apparatus configured to determine a position of a device in a network, the apparatus comprising:
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a memory unit; and at least one processor coupled to the memory unit;
the at least one processor configured;to decode a symbol comprising subcarriers to determine identification information that identifies a transmitter, in which the decoding comprises partitioning the subcarriers of the symbol; to determine a channel estimate associated with the transmitter using the subcarriers of the symbol; and to repeat the decoding and the determining for a plurality of symbols so that a plurality of transmitters associated with a plurality of channel estimates, respectively, are determined. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification