Patent ID: 9736629
Date: 2017-08-15
CPC Classifications: G01S,H04L,H04W

Claim:
1. A method for measuring, by a user equipment (UE), a reference signal time difference (RSTD) in a wireless communication system, the method comprising: receiving assistance data for observed time difference of arrival (OTDOA), including first position reference signal (PRS) information for an assistance data reference cell and second PRS information for two other cells from a location server, the first PRS information includes a PRS muting sequence for the assistance data reference cell and the second PRS information includes two PRS muting sequences, one for each of the two other cells, wherein a first bit of each PRS muting sequence corresponds to a first PRS occasion that starts after a system frame number (SFN) of the assistance data reference cell becomes 0; receiving a PRS for each of the assistance data reference cell and the two other cells based on the PRS muting sequences; and measuring the RSTD based on the received PRSs.