Systems and methods for indoor positioning using wireless positioning nodes
First Claim
1. A system for determining a location of a mobile device within an indoor environment, the system comprising:
- a first positioning node (PON) having one or more antennas and disposed in a first location in the indoor environment and configured to transmit a first modulated signal via a first antenna;
a second PON having one or more antennas disposed in a second location in the indoor environment different from the first location and configured to transmit a second modulated signal via a second antenna, the second modulated signal being synchronized in time and frequency with the first modulated signal at a time of transmission; and
a server configured toreceive a request from the mobile device, the request indicating a coarse location of the mobile device, the coarse location being related to a location of the indoor environment,transmit aiding information related to first PON and the second PON based on the request to the mobile device, the aiding information including location information for the first PON and the second PON, and signal information related to the first modulated signal and the second modulated signal; and
receive a position report from the mobile device, the position report being based on a difference in time between the first modulated signal and the second modulated signal at a time of arrival at the mobile device.
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Accused Products
Abstract
This disclosure provides systems and methods for determining a location of a mobile device within an indoor environment. An embodiment of the system can have one or more positioning nodes (PONs), each having one or more antennas. Each PON can be disposed at a location within indoor environment and configured to transmit signals via the one or more antennas. The signals transmitted from the antennas of the PONs can be synchronized in time and frequency. A server communicatively coupled to the PONs and storing aiding information, including location and signal information related to the PONs, can transmit the aiding information to a mobile device. The mobile device can receive the signals from use the PONs and use the aiding information to determine a three dimensional position within the indoor environment based on one-way time difference of arrival of the signals.
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Citations
20 Claims
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1. A system for determining a location of a mobile device within an indoor environment, the system comprising:
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a first positioning node (PON) having one or more antennas and disposed in a first location in the indoor environment and configured to transmit a first modulated signal via a first antenna; a second PON having one or more antennas disposed in a second location in the indoor environment different from the first location and configured to transmit a second modulated signal via a second antenna, the second modulated signal being synchronized in time and frequency with the first modulated signal at a time of transmission; and a server configured to receive a request from the mobile device, the request indicating a coarse location of the mobile device, the coarse location being related to a location of the indoor environment, transmit aiding information related to first PON and the second PON based on the request to the mobile device, the aiding information including location information for the first PON and the second PON, and signal information related to the first modulated signal and the second modulated signal; and receive a position report from the mobile device, the position report being based on a difference in time between the first modulated signal and the second modulated signal at a time of arrival at the mobile device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for determining a location of a mobile device within an indoor environment, the method comprising:
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transmitting, by a first positioning node (PON), a first modulated signal via a first antenna, the first PON having one or more antennas and disposed in a first location in the indoor environment; transmitting, by a second PON, a second modulated signal via a second antenna, the second PON having one or more antennas and disposed in a second location in the indoor environment different from the first location, the second modulated signal being synchronized in time and frequency with the first modulated signal at a time of transmission; receiving, at a server, a request from the mobile device indicating a coarse location of the mobile device, the coarse location being related to a location of the indoor environment; transmitting, by the server, aiding information related to first PON and the second PON, based on the request to the mobile device, the aiding information including location information for the first PON and the second PON, and signal information related to the first modulated signal and the second modulated signal; and receiving, at the server, a position report from the mobile device, the position report being based on a difference in time between the first modulated signal and the second modulated signal at a time of arrival at the mobile device. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method for operating a mobile device to determine the location of the mobile device within an indoor environment, the indoor environment having one or more positioning nodes (PONs), each PON having one or more antennas, the method comprising:
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determining, at a mobile device, a coarse location of the indoor environment; transmitting a request to a server including the coarse location, the server storing aiding information related to the one or more PONs; receiving, at the mobile device, the aiding information from the server based on the coarse location; receiving a first positioning signal from a first antenna of the one or more antennas; receiving a second positioning signal from a second antenna of the one or more antennas, the second positioning being out of phase with the first positioning signal; receiving a third positioning signal from a third antenna of the one or more antennas, the third positioning signal being out of phase with the first positioning signal and the second positioning signal; and determining a position mobile device based on a one-way time-difference of arrival (TDOA) between the first positioning signal, the second positioning signal, and the third positioning signal. - View Dependent Claims (19, 20)
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Specification