Time of arrival (TOA) estimation for positioning in a wireless communication network
First Claim
1. A method of supporting positioning, comprising:
- receiving a plurality of signals from a transmitter of a plurality of transmitters, the plurality of signals comprising a first signal received on a first set of subcarriers and a second signal received on a second set of subcarriers;
performing correlation for the first signal to obtain first correlation results for a plurality of time offsets;
performing correlation for the second signal to obtain second correlation results for the plurality of time offsets; and
determining a time of arrival (TOA) of the plurality of signals based at least in part on results of combining the first correlation results and the second correlation results.
2 Assignments
0 Petitions
Accused Products
Abstract
Techniques for determining time of arrivals (TOAs) of signals in a wireless communication network are described. Each cell may transmit (i) synchronization signals on a set of contiguous subcarriers in the center portion of the system bandwidth and (ii) reference signals on different sets of non-contiguous subcarriers distributed across the system bandwidth. A UE may determine TOA for a cell based on multiple signals transmitted on different sets of subcarriers. The UE may perform correlation for a first signal (e.g., a synchronization signal) from the cell to obtain first correlation results for different time offsets. The UE may perform correlation for a second signal (e.g., a reference signal) from the cell to obtain second correlation results for different time offsets. The UE may combine the first and second correlation results and may determine the TOA for the cell based on the combined correlation results.
-
Citations
35 Claims
-
1. A method of supporting positioning, comprising:
-
receiving a plurality of signals from a transmitter of a plurality of transmitters, the plurality of signals comprising a first signal received on a first set of subcarriers and a second signal received on a second set of subcarriers; performing correlation for the first signal to obtain first correlation results for a plurality of time offsets; performing correlation for the second signal to obtain second correlation results for the plurality of time offsets; and determining a time of arrival (TOA) of the plurality of signals based at least in part on results of combining the first correlation results and the second correlation results. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. An apparatus for supporting positioning, comprising:
-
means for receiving a plurality of signals from a transmitter of a plurality of transmitters, the plurality of signals comprising a first signal received on a first set of subcarriers and a second signal received on a second set of subcarriers; means for performing correlation for the first signal to obtain first correlation results for a plurality of time offsets; means for performing correlation for the second signal to obtain second correlation results for the plurality of time offsets; and means for determining a time of arrival (TOA) of the plurality of signals based at least in part on results of combining the first correlation results and the second correlation results. - View Dependent Claims (26, 27, 28, 29)
-
-
30. An apparatus for supporting positioning, comprising:
at least one processor configured; to receive a plurality of signals from a transmitter of a plurality of transmitters, the plurality of signals comprising a first signal received on a first set of subcarriers and a second signal received on a second set of subcarriers, to perform correlation for the first signal to obtain first correlation results for a plurality of time offsets; to perform correlation for the second signal to obtain second correlation results for the plurality of time offsets; and to determine a time of arrival (TOA) of the plurality of signals based at least in part on results of combining the first correlation results and the second correlation results. - View Dependent Claims (31, 32, 33, 34)
-
35. A computer program product, comprising:
a non-transitory computer-readable medium comprising; code to cause at least one processor to receive a plurality of signals from a transmitter of a plurality of transmitters, the plurality of signals comprising a first signal received on a first set of subcarriers and a second signal received on a second set of subcarriers, code to cause the at least one processor to perform correlation for the first signal to obtain first correlation results for a plurality of time offsets; code to cause the at least one processor to perform correlation for the second signal to obtain second correlation results for the plurality of time offsets; and code to cause the at least one processor to determine a time of arrival (TOA) of the plurality of signals based at least in part on results of combining the first correlation results and the second correlation results.
Specification