Method and apparatus for reporting a measurement result in a wireless communication system
The present invention relates to a method and apparatus for reporting a measurement result in a wireless communication system. A terminal configures a plurality of serving cells, and performs measurement on the plurality' of serving cells. When a measurement report is triggered, the terminal determines whether or not a quality of at least one serving cell from among the plurality of serving cells is lower than an auxiliary' threshold value. The measurement report includes the quality of a best neighboring cell at a serving frequency of the serving cell the quality of which is lower than the auxiliary threshold value.
1. A method for reporting a measurement result in a wireless communication system, the method performed by a user equipment, the method comprising:
configuring a plurality of serving cells including at least one primary cell and at least one secondary cell;
receiving a measurement configuration to report a measurement result;
performing measurement on the plurality of serving cells;
determining whether a measurement report is triggered based on the measurement configuration;
determining whether a quality of at least one of the plurality of serving cells is lower than a supplementary threshold when the measurement report is triggered; and
transmitting the measurement report to a base station,
wherein the measurement report includes the measured quality of one or more reporting cells from the plurality of serving cells and a quality of a best neighboring cell on a serving frequency of a serving cell having a quality that is lower than the supplementary threshold,
wherein the serving cell whose quality is compared with the supplementary threshold is a secondary cell that is different from a primary cell, and
wherein the measurement configuration includes an indicator that indicates whether to perform the comparison between a measured quality of the secondary cell and the supplementary threshold.
2. The method of claim 1 , wherein, if there is a reporting cell that satisfies the measurement configuration, the measurement report is triggered.
3. The method of claim 1 , wherein the supplementary threshold is independently given for each secondary cell.
4. The method of claim 1 , wherein the supplementary threshold is commonly given for all secondary cells.
5. An apparatus configured for reporting a measurement result in a wireless communication system, the apparatus comprising:
a radio frequency unit configured to transmit and receive a radio signal; and
a processor operably connected to the radio frequency unit and configured to:
configure a plurality of serving cells including at least one primary cell and at least one secondary cell;
receive a measurement configuration to report a measurement result;
perform measurement on the plurality of serving cells;
determine whether a measurement report is triggered based on the measurement configuration;
determine whether a quality of at least one of the plurality of serving cells is lower than a supplementary threshold when the measurement report is triggered; and
transmit the measurement report to a base station,
wherein the measurement report includes the measured quality of one or more reporting cells from the plurality of serving cells and a quality of a best neighboring cell on a serving frequency of a serving cell having a quality that is lower than the supplementary threshold,
wherein the serving cell whose quality is compared with the supplementary threshold is a secondary cell that is different from a primary cell, and
wherein the measurement configuration includes an indicator that indicates whether to perform the comparison between a measured quality of the secondary cell and the supplementary threshold.
6. The apparatus of claim 5 , wherein, if there is a reporting cell that satisfies the measurement configuration, the measurement report is triggered.
7. The apparatus of claim 5 , wherein the supplementary threshold is independently given for each secondary cell.
8. The apparatus of claim 5 , wherein the supplementary threshold is commonly given for all secondary cells.