Patent ID: 8948040
Filing Date: 2015-02-03
Classification: G01S,H04L,H04W

Abstract:
1. A method for determining a location of a user equipment in a wireless communication system, the method comprising: receiving reference signals from a plurality of base stations; and transmitting a reference signal time difference (RSTD) between the received reference signals received from the plurality of base stations, wherein the reference signals are mapped within a subframe according to a predetermined pattern, wherein the subframe includes at least one basic unit of which size corresponds to 12 subcarriers×14 OFDM symbols, wherein the reference signals are mapped into at least one resource element within the basic unit where an resource element is a time-frequency resource defined by one subcarrier and one OFDM symbol, and wherein the predetermined pattern is configured as illustrated in the following Pattern Table 1, where “P” represents a resource element into which the reference signals are mapped, “SC” is a subcarrier index, and “S” is an OFDM symbol index: