Patent ID: 8682344

Claim:
A method for transmitting, by a base station, a signal for location measurement for a location based service (LBS) in a wireless communication system, the method comprising: transmitting, by the base station, a secondary advanced preamble in a first orthogonal frequency division multiplexing access (OFDMA) symbol of a first frame, a primary advanced preamble in a first OFDMA symbol of a second frame and the secondary advanced preamble in a first OFDMA symbol of a third frame among four frames within every superframe; and transmitting, by the base station, a location measurement signal of the base station on one predefined time-frequency resource among a plurality of predefined time-frequency resources, each of which is configured with one of a plurality of predefined frequency segments and one of a plurality of predefined OFDMA symbols, within a location measurement zone configured for transmission of the location measurement signal, wherein the one predefined time-frequency resource, on which the location measurement signal of the base station is transmitted, is determined based on a cell identity assigned to the base station, and wherein an OFDMA symbol of the one predefined time-frequency resource is a first OFDMA symbol of a fourth frame within a superframe belonging to the location measurement zone.