Patent ID: 9313672
Filing Date: 2016-04-12
CPC Classification: H04B,H04W

Claim Text:
1. A method for coordinated transmission in a plurality of cells of a wireless communication system, the plurality of cells including a serving cell, neighboring cells and interfering cells among the neighboring cells, the method comprising: receiving a radio quality metric from the serving cell of the wireless communication system, the radio quality metric dynamically set by the serving cell on a per-user equipment basis: performing, by a user equipment, a cell search independent of measurement configuration information and a candidate cell list from the serving cell; measuring, by the user equipment, a plurality of quality of signals received from the plurality of cells of the wireless communication system based on the cell search; calculating, by the user equipment, a plurality of differences between a quality of signal from the serving cell and quality of signals from each of the neighboring cells, each difference of the plurality of differences being between the quality of signal from the serving cell and a quality of signal from a corresponding neighboring cell; comparing, by the user equipment, the plurality of differences with the radio quality metric; determining, by the user equipment, activation of coordinated transmission of the plurality of cells when the user equipment detects an interference condition between signals received from any one of the plurality of cells according to a result of comparing the plurality of differences with the radio quality metric; triggering, by the user equipment, transmission from only the serving cell of the plurality of cells, without coordinated transmission of at least two cells of the plurality of cells, when the user equipment does not detect the interference condition between signals received from any one of the plurality of cells; and detecting, by the user equipment, the interference condition based on the radio quality metric and triggering, by the user equipment, coordinated transmission by transmitting a trigger signal to at least a cell of the plurality of cells.