HANDOVER FAILURE DETECTION DEVICE HANDOVER PARAMETER ADJUSTMENT DEVICE AND HANDOVER OPTIMIZATION SYSTEM

摘要

The handover failure detection device 121 is configured to detect a handover failure from the first cell 131 managed by the first base station 111 to the second cell 132 managed by the second base station 112 101, and (b) whether or not the first base station 111 receives from the mobile terminal 101 an acknowledgment of the handover instruction regarding the first handover of the first mobile station 101 And to detect at least some of the plurality of types of handover failures related to the outbound handover from the first cell 131 by observing the presence or absence of a request to establish a connection to the cell 131. [ This contributes to improvement of handover failure detection or reduction of handover failure, for example, in a situation where exchange of information between base stations is limited.