METHOD AND APPARATUS FOR GENERATING REFERENCE SIGNALS FOR ACCURATE TIME-DIFFERENCE OF ARRIVAL ESTIMATION Russian patent published in 2015 - IPC G01S5/02 H04W4/02 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to wireless communication networks. A base station transmits a positioning reference signal (PRS) to wireless communication devices over a downlink in a wireless communication system by encoding a PRS into a first set of transmission resources, encoding other information into a second set of transmission resources, multiplexing the two sets of resources into a subframe such that the first set of resources is multiplexed into at least a portion of a first set of orthogonal frequency division multiplexed (OFDM) symbols based on an identifier associated with the base station and the second set of resources is multiplexed into a second set of OFDM symbols. Upon receiving the subframe, a wireless communication device determines which set of transmission resources contains the PRS based on the identifier associated with the base station that transmitted the subframe and processes the set of resources containing the PRS to estimate timing information, e.g. time of arrival.

EFFECT: preventing loss of orthogonality in subcarrier transmissions.

11 cl, 14 dwg, 1 tbl