Patent ID: 9544725
Date: 2017-01-10
CPC Classifications: G01S,H04L,H04W

Claim:
1. A method for determining position of a user equipment in a wireless mobile communication system, the method comprising: receiving positioning reference signals in a plurality of subframes; and measuring reference signal time difference (RSTD) between the positioning reference signals received in the plurality of subframes used for determining a position of the user equipment, wherein a pattern of the positioning reference signals corresponds to a 12×12 resource element matrix pattern, the pattern of the positioning reference signals is mapped to 12×12 resource elements specified by 12 subcarriers and 12 orthogonal frequency division multiplexing (OFDM) symbols of each of the subframes, and the positioning reference signals are not transmitted on 12 subcarriers in a OFDM symbol in which a common reference signal (CRS) is transmitted, and wherein at least 3 OFDM symbols from an initial OFDM symbol are not used for the positioning reference signals in each of the subframes regardless of a number of OFDM symbols used for a physical downlink control channel.