HOME ZONE SERVICE METHOD FOR MOBILE TELEPHONE SUBSCRIBERS IN MOBILE RADIO COMMUNICATION SYSTEM

摘要

DISCLOSED IS A HOME ZONE SERVICE METHOD FOR ASSIGNING A SPECIFIED ZONE TO A MOBILE TELEPHONE SUBSCRIBER (100) ARID CHARGING THE SUBSCRIBER (100) AT DIFFERENT BILLING RATED ACCORDINGLY AS THE SUBSCRIBER (100) MAKES A TELEPHONE CALL INSIDE OR OUTSIDE THE ZONE.ACCORDING TO THE HOME ZONE SERVICE METHOD, A ZONE WHICH IS DEFINED BY A FIRST MEASUREMENT VALUE AND A SECOND MEASUREMENT VALUE AS A SUB-SECTOR IS DETERMINED BY MEASURING A ROUND TRIP DELAY (RTD) FROM A FIXED LOCATION IN A SECTOR OF A CELL TO THE NEIGHBOR BASE STATIONS (BS) TO WHICH THE SUBSCRIBER (100) BELONGS, SO THAT A PREDETERMINED HOME ZONE DATABASE INCLUDING THE FIRST VALUE AND THE SECOND VALUE IS PREPARED. THE ROUND TRIP DELAY (RTD) IS MEASURED FROM A SPECIFIED SIGNAL IF A PORTABLE MOBILE TERMINAL (MS) OF THE SUBSCRIBER (100) GENERATES A REQUEST SIGNAL TO ESTABLISH A CALL CONNECTION. THEN, IT IS DETERMINED WHETHER THE SUBSCRIBER (100) IS LOCATED INSIDE THE SUB-SECTOR IF THE MEASURED ROUND TRIP DELAY (RTD) FALLS BETWEEN THE FIRST VALUE AND THE SECOND VALUE OF THE HOME ZONE DATABASE. (FIGURE 3)