CDMA cellular system in which different channel is allocated

A CDMA cellular system comprising:

• a plurality of base station control apparatuses, each of which is provided for a service area of cells;
• and
• a plurality of radio base stations, each of which is provided for one of the cells and is connected with one of said plurality of base station control apparatuses,
• wherein each of said plurality of base station control apparatuses has a radio channel data table including a plurality of groups of radio channel data, and selects one of said plurality of groups of radio channel data as said specific group of radio channel data, and selects one of said radio channel data of said specific group as a specific radio channel data in response to a channel allocation request, said specific radio channel data being unique to one of said plurality of base station control apparatuses,
• said one radio base station establishes a radio channel between said one radio base station and a radio terminal associated with said channel allocation request based on said specific radio channel data.

A method of establishing a unique radio channel in a CDMA cellular system which comprises a plurality of base station control apparatuses, each of which is provided for a service area of cells;

• and a plurality of radio base stations, each of which is provided for one of the cells and is connected with one of said plurality of base station control apparatuses, wherein a specific one of said plurality of radio base stations accommodates a radio terminal, and a specific one of said plurality of base station control apparatuses accommodates said specific radio base station, said method comprising the steps of:
• (a) said specific base station control apparatus storing a radio channel data table including a group of radio channel data as a specific group of radio channel data, wherein said specific groups of radio channel data for said plurality of base station control apparatuses are different from each other;
• (b) said specific base station control apparatus selecting one of said radio channel data of said specific group as a specific radio channel data in response to a channel allocation request;
• and
• (c) said specific radio base station establishing a radio channel with a radio terminal associated with said channel allocation request based on said specific radio channel data.