Patent ID: 8838091

Claim:
A method of performing a measurement report in wireless communication system, the method comprising: receiving, from a network, a message related to a measurement report configuration; measuring a radio environment after receiving the message, wherein the radio environment is measured in a Radio Resource Control (RRC) idle mode; logging the radio environment measurement; performing the steps of logging until a certain condition is met; aggregating at least two or more logged radio environment measurements; and reporting the aggregated radio environment measurements to the network, wherein the radio environment measurements are aggregated with a time parameter and a location parameter for a corresponding measurement, wherein the time parameter for the corresponding measurement is indicated as an elapsed time from a time at which the message related to the measurement report configuration was received, wherein the location parameter for the corresponding measurement includes location coordinates for the corresponding measurement, wherein the logging is performed in accordance with a position of terminal, wherein the aggregated radio environment measurement is reported based on a radio environment measurement report condition, and wherein the radio environment measurement report condition is at least one of a network's indicated number, an absolute time, a network demand, a periodical timer, a terminal memory usage, and the position of terminal.