Method for using terminal to detect small-scale cell in environment in which macrocell and small-scale cell coexist

摘要

The present disclosure provides a method for using a terminal to detect a small-scale cell at the edge of coverage of the small-scale cell in a wireless communication system in which a macrocell and the small-scale cell coexist. The present invention may include: a step of measuring a macrocell; a step of comparing a value related to the reference signal received quality (RSRQ) acquired according to the macrocell measurement with at least one critical value; a step of determining whether or not to carry out at least one interference removal function for receiving a signal from a small-scale cell in accordance with the determined results; and a step of detecting the signal from the small-scale cell when the interference removal function is actuated.

主权项

1. A method for detecting a small-scale cell in a wireless communication system in which a macro cell and the small-scale cell coexist, the method performed by a user equipment which is located outside a coverage of the small-scale cell and comprising:
performing a measurement for the macro cell; comparing a value related to a reference signal received quality (RSRQ) obtained by the measurement for the macro cell with at least one threshold value; determining whether to operate at least one interference removing function in order to receive a signal from the small-scale cell, according to a result of comparing the value; and detecting the signal from the small-scale cell, if the interference removing function is operated, wherein the value related to the RSRQ is obtained byCRS_Es⁢/⁢Iot⁡[dB]=10⁢⁢log⁢⁢10⁢(10R⁢⁢S⁢⁢R⁢⁢Q+10⁢log⁢⁢10⁢(12)101-10R⁢⁢S⁢⁢R⁢⁢Q+10⁢⁢log⁢⁢10⁢(12)10), wherein the Iot is a density of a received power spectrum of total noise and interference for a resource element (RE) measured in an antenna connector, wherein the CRS_Es is a received energy for the RE in a valid part of symbols.