TIME OF ARRIVAL (TOA) ESTIMATION FOR POSITIONING IN WIRELESS COMMUNICATION NETWORK

摘要

PROBLEM TO BE SOLVED: To provide techniques for accurately determining time of arrival (TOA) of signals in a wireless communication network.SOLUTION: 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. UE may determine TOA for a cell on the basis of multiple signals transmitted on different sets of subcarriers. The UE may combine a correlation result for a first signal (e.g., a synchronization signal) from the cell with a correlation result for a second signal (e.g., a reference signal) from the cell so as to determine accurate TOA for the cell on the basis of the combined correlation results.