Mobile communication method, radio base station, and upper node

摘要

Provided is a mobile communication method used in a mobile communication system including a plurality of radio base stations and an upper level node of the radio base stations. The upper level node and a radio base station as a handover source contain access bearer setting information set between the upper level node and the radio base station of the handover source. The mobile communication method includes: step A in which the radio base station of the handover source reports the access bearer setting information to a radio base station of the handover destination; step B in which the radio base station of the handover destination stores the access bearer setting information reported from the radio base station of the handover source; and step C in which the upper level node sets an access bearer for the radio base station of the handover destination by using the stored access bearer setting information without executing a reallocation process of new access bearer setting information for a path switching request from the radio base station of the handover destination.