Handover apparatus between a base station with another in carrier aggregation environment

A method and apparatus for handover between base stations in a carrier aggregation environment is provided. In the carrier aggregation environment in which a mobile terminal and base stations use a plurality of carrier frequency bands to transmit and receive data, a source base station analyzes the content of measurement report for each carrier component received from the mobile terminal and determines whether to perform handover of each carrier component, and manages handover of a determined particular carrier component. Accordingly, a problem of wastage of time and resources that occurs in a single carrier environment can be resolved.