Precise positioning receiver clock estimation without primary signal dependency
AssigneeQUALCOMM Incorporated
InventorsMin WANG, James STEPHEN, Yinghua YANG, Ning LUO
Life of this patent
Estimating the term…
Abstract
A positioning method includes: receiving, at an apparatus from a first signal source, a first positioning signal; determining, at the apparatus, a first receiver clock value with respect to the first positioning signal; determining, at the apparatus in response to loss of reception of the first positioning signal, a drift of the first receiver clock value using delta carrier phase updating based on one or more available positioning signals; and determining, at the apparatus, a second receiver clock value based on the first receiver clock value and the drift of the first receiver clock value.
Claims20
An apparatus comprising:
- one or more receivers configured to transduce wireless signals into guided signals;
- one or more memories;
- one or more processors, communicatively coupled to the one or more receivers and the one or more memories, configured to:
- receive a first positioning signal, corresponding to a first signal source, from the one or more receivers;
- determine a first receiver clock value with respect to the first positioning signal;
- determine, in response to loss of reception of the first positioning signal, a drift of the first receiver clock value using delta carrier phase updating based on one or more available positioning signals;
- and
- determine a second receiver clock value based on the first receiver clock value and the drift of the first receiver clock value.
A positioning method comprising:
- receiving, at an apparatus from a first signal source, a first positioning signal;
- determining, at the apparatus, a first receiver clock value with respect to the first positioning signal;
- determining, at the apparatus in response to loss of reception of the first positioning signal, a drift of the first receiver clock value using delta carrier phase updating based on one or more available positioning signals;
- and
- determining, at the apparatus, a second receiver clock value based on the first receiver clock value and the drift of the first receiver clock value.
An apparatus comprising:
- means for receiving, from a first signal source, a first positioning signal;
- means for determining a first receiver clock value with respect to the first positioning signal;
- means for determining, in response to loss of reception of the first positioning signal, a drift of the first receiver clock value using delta carrier phase updating based on one or more available positioning signals;
- and
- means for determining a second receiver clock value based on the first receiver clock value and the drift of the first receiver clock value.
A non-transitory, processor-readable storage medium comprising processor-readable instructions to cause a processor of an apparatus to:
- receive, from a first signal source, a first positioning signal;
- determine a first receiver clock value with respect to the first positioning signal;
- determine, in response to loss of reception of the first positioning signal, a drift of the first receiver clock value using delta carrier phase updating based on one or more available positioning signals;
- and
- determine a second receiver clock value based on the first receiver clock value and the drift of the first receiver clock value.
Dependencies are inferred from the claim text.