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

摘要

The handover failure detection device (121) moves from (a) the first cell (131) belonging to the first base station (111) to the second cell (132) belonging to the second base station (112). The presence or absence of reception of an acknowledgment of the handover instruction related to the first handover of the terminal (101) by the first base station (111), and (b) the first from the mobile terminal (101) generated after the start of the first handover By observing the presence / absence of a request for connection re-establishment for the cell (131), at least a part of a plurality of handover failure types related to the outward handover from the first cell (131) is detected. Thereby, for example, it contributes to the improvement of the handover failure detection or the reduction of the handover failure in a situation where the exchange of information between the base stations is limited.