Handover failure detection device, handover parameter adjustment device, and handover optimization system

Abstract

A handover failure detection device () detects at least one of handover failure types regarding outgoing handover from a first cell () managed by a first base station () by observing: (a) presence/absence of reception by the first base station () of an acknowledgment response to a handover command regarding first handover of a mobile terminal () from the first cell () to a second cell () managed by a second base station (); and (b) presence/absence of a request for connection re-establishment from the mobile terminal () to the first cell (), the request occurring after initiation of the first handover. As a result, it contributes to improvement of handover failure detection or reduction of handover failure in a situation where exchange of information between base stations is restricted.