Method and apparatus for determining path loss by combining geolocation with interference suppression
First Claim
1. A method for determining a path loss value between a receiver at a first location and a wireless mobile device at a second location, the receiver being one of a plurality of receivers where each receiver is sited at a location different from the other receivers and from the second location, comprising the steps of:
- geolocating the mobile device at the second location; and
at the receiver, the receiver being at the first location;
receiving a first signal transmitted by the mobile device at the second location;
determining a received signal level of the first signal; and
receiving a second signal transmitted by the mobile device at the second location, the second signal comprising data from which a transmitted signal attribute of the mobile device at the second location can be determined;
sending to a central node a first reference signal representative of the transmitted signal attribute;
determining at the central node a primary receiver from the plurality of receivers and sending to the primary receiver a second reference signal representative of the first reference signal from the receiver at the first location; and
determining from the received signal level of the first signal and from the second reference signal the path loss value between the primary receiver and the mobile device at the second location.
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Accused Products
Abstract
The instant disclosure generally relates to a method and apparatus for determining path loss by combining geolocation with interference suppression. In one embodiment, the disclosure relates to a method for determining a path loss value between a receiver at a first location and a wireless mobile device at a second location. The method includes the steps of: (a) locating the mobile device at the second location and (b) at the receiver: (i) receiving a first signal transmitted by the mobile device at the second location; (ii) determining a received signal level of the first signal; (iii) receiving a second signal comprising data from which a transmitted signal level of the mobile device at the second location can be determined; and (iv) determining from the first and second signals the path loss value between the receiver and the mobile device at the second location.
22 Citations
53 Claims
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1. A method for determining a path loss value between a receiver at a first location and a wireless mobile device at a second location, the receiver being one of a plurality of receivers where each receiver is sited at a location different from the other receivers and from the second location, comprising the steps of:
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geolocating the mobile device at the second location; and at the receiver, the receiver being at the first location; receiving a first signal transmitted by the mobile device at the second location; determining a received signal level of the first signal; and receiving a second signal transmitted by the mobile device at the second location, the second signal comprising data from which a transmitted signal attribute of the mobile device at the second location can be determined; sending to a central node a first reference signal representative of the transmitted signal attribute; determining at the central node a primary receiver from the plurality of receivers and sending to the primary receiver a second reference signal representative of the first reference signal from the receiver at the first location; and determining from the received signal level of the first signal and from the second reference signal the path loss value between the primary receiver and the mobile device at the second location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for determining a path loss value between a wireless mobile device at a first location and each of a plurality of receivers where each receiver is sited at a location different from the other receivers and different from the first location, comprising the steps of:
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geolocating the mobile device at the first location; at each of the plurality of receivers; receiving a first signal transmitted by the mobile device at the first location; receiving a second signal transmitted by the mobile device at the first location, the second signal comprising data from which a transmitted signal attribute of the mobile device at the first location can be determined; and sending to a central node a first reference signal representative of a signal attribute of the first signal; determining at the central node a primary receiver and sending to the plurality of receivers a second reference signal representative of the first reference signal from the primary receiver; and at each of the plurality of receivers determining from a received signal level of the first signal or from the second reference signal the path loss value between the receiver and the mobile device at the first location. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method for determining a path loss value between a wireless mobile device at a first location and each of a plurality of receivers where each receiver is sited at a location different from the other receivers and different from the first location, comprising the steps of:
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at each of the plurality of receivers; receiving a first signal transmitted by the mobile device at the first location; receiving a second signal transmitted by the mobile device at the first location, the second signal comprising data from which a transmitted first signal attribute of the mobile device at the first location can be determined; and sending to a central node a first reference signal representative of a first signal attribute of the first signal;
at the central node;receiving the first reference signals from the plurality of receivers; determining a primary receiver from the first reference signals; and sending to the plurality of receivers a second reference signal representative of the first reference signal from the primary receiver; receiving at a wireless location sensor a third signal from the mobile device and determining the geolocation of the mobile device at the first location as a function of either a second attribute of the third signal or information contained in the third signal; and at each of the plurality of receivers; receiving the second reference signal; determining from a signal level of the third signal and from the second reference signal the path loss value between the receiver and the mobile device at the first location. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A system for determining a path loss value between a wireless mobile device at a first location and each of a plurality of receivers where each receiver is sited at a location different from the other receivers and different from the first location, the system comprising:
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circuitry including a microprocessor for locating the mobile device at the first location; at least one of the plurality of receivers comprising; means for receiving a first signal transmitted by the wireless mobile device at the first location; first circuitry for determining an attribute of the first signal; means for sending a first reference signal to a central node, the first reference signal representing the attribute of the first signal; means for receiving a second signal from the central node; circuitry for determining the path loss value between the wireless mobile device and the receiver as a function of the location of the mobile device and a signal level of the second signal;
the central node comprising;means for selecting a primary receiver from the plurality of receivers as a function of the first reference signal; means for sending to each of the plurality of receivers the second signal representative of the first reference signal received from the primary receiver. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44)
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45. A system for determining a path loss value between a wireless mobile device at a first location and each of a plurality of receivers where each receiver is sited at a location different from the other receivers and different from the first location, the system comprising:
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at least one of the plurality of receivers comprising;
means for receiving a first signal transmitted by the wirelessmobile device at the first location; first circuitry for determining an attribute of the first signal; means for sending a first reference signal to a central node, the first reference signal representing the attribute of the first signal; means for receiving a second reference signal from the central node; circuitry for determining the path loss value between the wireless mobile device and the receiver as a function of the location of the mobile device and the second reference signal;
the central node comprising;means for selecting a primary receiver from the plurality of receivers as a function of the first reference signal received from each receiver; means for sending to each of the plurality of receivers the second signal representative of the first reference signal received from the primary receiver; a location sensor comprising; circuitry for determining the location of the wireless mobile device as a function of an attribute of a third signal received from the wireless mobile device; means for communicating the location of the wireless mobile device to at least one of the plurality of receivers. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53)
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Specification