US 7,412,243 B2 · Mobile communication system and load distribution method of multiple frequencies in the same

Abstract

A radio network controller 11 for controlling a base station in a CDMA or W-CDMA mobile communication system includes a state measurement part 21, a call control processing part 31, and a frequency load distribution processing part 41. The frequency load distribution processing part 41 is provided with a frequency state change processing 42 for updating each frequency's state data 44 and next assignment management data 45 by referring a frequency state change notice notified when a state is changed by call control, and frequency assignment control processing 43 for selecting a frequency by referring to the updated next assignment management data and for returning a frequency assignment response, in response to a frequency assignment request transmitted from the call control processing part. With this constitution, load distribution of multiple frequencies is achieved by deriving a next assigned frequency on the basis of operating states of each frequency.

Claims12

Dependent claims

A mobile communication system of a CDMA or W-CDMA system which comprises a mobile unit, a base station having a plurality of carrier frequency bands, and a radio network controller controlling the base station, wherein

the radio network controller comprises a state measurement part, a call control processing part, and a frequency load distribution processing part, and
the frequency load distribution part comprises:
frequency state change processing means for updating preformed each frequency's state data and next assignment management data by referring to a frequency state change notice transmitted from the state measurement part;
and
frequency assignment control processing means for, in response to a frequency assignment request added with current processing information that is transmitted from the call control processing part, selecting a frequency by referring the updated next assignment management data and returning a frequency assignment response,
wherein the frequency assignment suppresses a state of switching carrier frequencies at a time of moving into neighboring cells.

3 more elements

A load distribution method of multiple frequencies in a CDMA or W-CDMA mobile communication system which comprises a mobile unit, a base station having a plurality of carrier frequency bands, and a radio network controller controlling the base station, wherein the radio network controller executes at least the following steps of:

forming a frequency state change notice based on state changes of a frequency;
updating pre-formed each frequency's state data by referring to the frequency state change notice;
updating pre-formed next assignment management data by referring to the updated each frequency's state data;
selecting the frequency by referring to the updated next assignment management data and returning a frequency assignment response when a frequency assignment request added with current processing information is transmitted from a call control processing part;
and
assigning the frequency by referring to the frequency assignment response, wherein the frequency assignment suppresses a state of switching carrier frequencies at a time of moving into neighboring cells.

3 more elements

Dependencies are inferred from the claim text.

Mobile communication system and load distribution method of multiple frequencies in the same

Life of this patent

Mobile communication system and load distribution method of multiple frequencies in the same

Life of this patent

Abstract

Claims12