Patent ID: 9088954
Filing Date: 2015-07-21
Classification: H04W

Abstract:
1. A method for transmitting, by a base station, a location measurement signal for a location based service (LBS) in a wireless communication system, the method comprising: configuring a location measurement zone for transmitting the location measurement signal; transmitting a superframe header (SFH) including information indicating whether or not the location measurement zone is activated; determining, based on a cell identity assigned to the base station, an orthogonal frequency division multiplexing access (OFDMA) symbol index from among a plurality of predefined OFDMA symbol indices within the location measurement zone and a carrier set from among a plurality of carrier sets; and transmitting the location measurement signal on the determined carrier set and the determined OFDMA symbol index during the location measurement zone, wherein the location measurement signal is transmitted by using a secondary advanced preamble of the base station, and wherein each of the plurality of predetermined OFDMA symbol indices indicates a first OFDMA symbol of a first subframe of a last frame among first to last frames within a superframe belonging to the location measurement zone.