base station handover procedure if the base station a takes into account whether the candidate target base station supports the assistance information reporting and processing capability and the base station a determines a handover procedure to be initiated then the base station a can judge from the edda capability support list stored by the base station a whether the candidate target base station support the assistance information reporting and processing capability when the base station a determines that the candidate target base station supports the capability the base station a can transmit ppi information to the candidate target base station in a handover preparation message particularly the base station a can add the ppi information to an existing handover preparation message information element ie or access stratum as context ie or as configuration ie or radio resource management rrm configuration ie to transmit to the candidate target base station the latest ppi information reported previously by the ue to the base station a particularly the base station a can alternatively transmit to the candidate target base station the ppi information reported by the ue only if the ppi information indicates low power in this case when both the source base station and the candidate target base station support the assistance information reporting and processing capability of the ue and the candidate target base station receive no ppi information transmitted by the source base station the candidate target base station determine by default that the ppi information of the ue indicates default configuration operation 205 the candidate target base station supporting the assistance information reporting and processing capability configure the ue with a radio resource parameter based upon the.