Patent ID: 7304967

Claim:
A cellular communication system, comprising: a plurality of base stations that have respective communication areas with boundary regions that meet; and plural terminals that communicate wirelessly with said base stations, each of said terminals being allocated a time slot from one of said base stations with which the respective terminal communicates; wherein, when a first one of said terminals that communicates with a first one of said base stations using a first frequency and a second one of said terminals that communicates with a second one of said base stations using the first frequency are located in the boundary regions of said first and second ones of said base stations, said first and second ones of said base stations allocate different time slots to said first and second ones of said terminals, and wherein, when said first one of said terminals that communicates with said first one of said base stations using the first frequency is located in the boundary regions of said first and second base stations when said second one of said terminals that communicates with said second one of said base stations using the first frequency is located out of the communication area of said first one of said base stations and out of the boundary regions of said first and second ones of said base stations, said first and second ones of said base stations are permitted to allocate a same time slot to said first and second ones of said terminals.