FIELD: radio engineering, communication.
SUBSTANCE: method includes: determining when the link failure occurs, detailed initiation information causing link failure; analysis of link failure cause in accordance with the detailed initiation information causing link failure; and transmitting link failure cause obtained by the analysis to network side. In addition, the UE may transmit detailed causes in the detailed configuration information, received by the analysis, to the network side, so that the network side determines the root cause of link failure in accordance with cause or in accordance with cause in combination with the measurement result in order to take appropriate actions for more accurate network optimisation.
EFFECT: increase the accuracy of optimisation.
7 cl, 14 dwg
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