Handover of a mobile communication terminal capable of asynchronous and synchronous networks are mixed mobile communication system and handover method

摘要

Hand over of the portable communications terminal the possible asynchronous net the hand over method of using the mutual gearing operational section in the portable communication system and this portable communication system where the synchronization network exists together is disclosed. Asynchronism and the synchronous switchboard to be connected by the mutual gearing operational section, to be connected by the deyuarusutatsuku foam/home position register which it retains and manages asynchronism of the portable communications terminal and information of synchronous joining, the mutual gearing operational section to retain and manage synchronous portable communication system information and, to receive the information of synchronous joining of the portable communications terminal from the foam/home position register according to the hand over request from the asynchronous switchboard, sending the information of synchronous joining of synchronous system information and the portable communications terminal the asynchronous switchboard the trunk that try is set with the synchronous switchboards in the synchronous switchboard and by receiving response, movementThe communications terminal the synchronous portable communication system being connected, when the effect which hand over completes from the synchronous switchboard is reported, it tries to request that radio connection is released to the asynchronous switchboard, it is possible the service difference between the generation overcomes to prevent the kind of phenomenon where telephone call breaks off because of this, the asynchronous net in the boundary limits of the synchronization network it is possible to offer good quality service, it is possible to retrench the investment expense which is necessary for the actualization of the asynchronous portable communication system.