Patent ID: 11864150
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 10:
11. A network node configured to communicate with a wireless device (WD), the network node comprising:
at least one processor; and
memory storing software instructions configured to control the at least one processor to implement a process including:
employing a coordinated multipoint process to decode data from a WD using signals received from the WD by the network node and from signals received from the WD by a plurality of cooperating network nodes;
converting the decoded WD data into a frequency domain reference signal and converting the signals received from the plurality of cooperating network nodes into frequency domain neighbor signals;
multiplying a complex conjugate of the frequency domain reference signal by each of the plurality of frequency domain neighbor signals to produce a plurality of product signals;
converting each of the product signals into a time domain signal to provide a time difference of arrival of each frequency domain neighbor signal; and
calculating a position of the WD based on the time difference of arrival of each frequency domain neighbor signal and based on locations of the cooperating network nodes.