Patent US10542518 Z-ARCHIVE-V2X Communication

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Patent US10542518

Issued 2020-01-21

Mobile Access Point Detection

Measurements from a plurality of Access Points (APs) may be used to determine that at least one AP in the plurality is mobile. Measurements from APs determined to be mobile may be excluded when determining a User Equipment (UE) location. Disclosed embodiments also pertain to AP mobility characterization. AP mobility may be determined based on range rate measurements such as Round Trip Time measurements between the AP and UE; or a Doppler frequency shift relative to a nominal frequency used by the AP for transmissions. Based on range rate measurements, a probability of mobility may be assigned to APs. Information pertaining to APs that are determined to be stationary or associated with a low probability of mobility may be reported to a location server. Information pertaining to APs determined to be mobile or associated with a higher probability of mobility may not be reported to a location server.

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4 Independent Claims

1. A method on a User Equipment (UE) comprising: obtaining measurements from a plurality of Access Points (APs), wherein each AP of the plurality of APs is associated with a corresponding measurement set comprising range rate measurements, wherein the range rate measurements in the corresponding measurement set are based on corresponding Round Trip Time (RTT) measurements between the UE and the AP; determining, based at least in part, on the corresponding RTT measurements, a corresponding probability that at least one AP of the plurality of APs is mobile; and determining a location of the UE based upon a subset of the measurements from the plurality of APs, wherein, in response to a determination that the corresponding probability that the at least one AP is mobile exceeds a threshold, the subset excludes measurements from the at least one AP determined to be mobile.
12. A User Equipment (UE) comprising: a memory; a transceiver; and a processor coupled to the memory and the transceiver, wherein the processor is configured to: obtain, using the transceiver, measurements from a plurality of Access Points (APs), wherein each AP of the plurality of APs is associated with a corresponding measurement set comprising range rate measurements, wherein the range rate measurements in the corresponding measurement set are based on corresponding Round Trip Time (RTT) measurements between the UE and the AP; determine, based at least in part, on the corresponding RTT measurements, a corresponding probability that at least one AP of the plurality of APs is mobile; and determine a location of the UE based upon a subset of the measurements from the plurality of APs, wherein in response to a determination that the corresponding probability that the at least one AP is mobile exceeds a threshold, the subset excludes measurements from the at least one AP determined to be mobile.
21. A User Equipment (UE) comprising: means for obtaining measurements from a plurality of Access Points (APs), wherein each AP of the plurality of APs is associated with a corresponding measurement set comprising range rate measurements, wherein the range rate measurements in the corresponding measurement set are based on corresponding Round Trip Time (RTT) measurements between the UE and the AP; means for determining, based at least in part, on the corresponding RTT measurements, a corresponding probability that at least one AP of the plurality of APs is mobile; and means for determining a location of the UE based upon a subset of the measurements from the plurality of APs, wherein in response to a determination that the corresponding probability that the at least one AP is mobile exceeds a threshold, the subset excludes measurements from the at least one AP determined to be mobile.
22. A non-transitory computer-readable medium comprising executable instructions to configure a processor on a User Equipment (UE) to: obtain measurements from a plurality of Access Points (APs), wherein each AP of the plurality of APs is associated with a corresponding measurement set comprising range rate measurements, wherein the range rate measurements in the corresponding measurement set are based on corresponding Round Trip Time (RTT) measurements between the UE and the AP; determine, based at least in part, on the corresponding RTT measurements, a corresponding probability that at least one AP of the plurality of APs is mobile; and determine a location of the UE based upon a subset of the measurements from the plurality of APs, wherein in response to a determination that the corresponding probability that the at least one AP is mobile exceeds a threshold, the subset excludes measurements from the at least one AP determined to be mobile.