Radio network controller, mobile station, and mobile communication method

Abstract

A radio network controller comprises a cell selector configured to select a cell to use by a mobile station after data reception, and a mobile station controller configured to control the mobile station to communicate by radio using the cell selected by the cell selector after the data reception.

1 . A radio network controller comprising: 
 a cell selector configured to select a cell to use by a mobile station after data reception; and    a mobile station controller configured to control the mobile station to communicate by radio using the cell selected by the cell selector after the data reception.    
   
   
       2 . The radio network controller according to  claim 1 , wherein 
 the cell selector selects a frequency of the cell to use after the data reception, and    the mobile station controller controls the mobile station to communicate by radio using the cell of the frequency after the data reception    
   
   
       3 . The radio network controller according to  claim 1 , wherein the mobile station controller generates a control signal for notifying the mobile station of a selected cell.  
   
   
       4 . The radio network controller according to  claim 1 , wherein the cell selector selects cells to use by mobile stations after the data reception, and sets ratios of the mobile stations using respective cells to selected cells.  
   
   
       5 . The radio network controller according to  claim 1 , wherein the cell selector selects the cell to use after the data reception based on at least one of a use history of the cell by the mobile station, a use status of radio resources in the cell, the number of mobile stations being present in the cell, a propagation path state in the cell, neighboring cell information about the cell neighboring the cell the mobile station uses at the data reception, and communication quality in the cell.  
   
   
       6 . The radio network controller according to  claim 5 , wherein the cell selector selects a cell of a frequency, which the mobile station used just before the data reception as the cell to use after the data reception.  
   
   
       7 . The radio network controller according to  claim 5 , further comprising: 
 a cell information storage unit configured to store the use history of the cell, wherein    the cell selector selects the cell to use after the data reception by referring to the cell information storage unit.    
   
   
       8 . The radio network controller according to  claim 1 , wherein the cell selector selects the cell to use after the data reception randomly.  
   
   
       9 . The radio network controller according to  claim 1 , wherein 
 the cell selector selects a cell of a frequency other than a banned frequency, which the mobile station is banned from using, as the cell to use after the data reception by determining the banned frequency, and    the mobile station controller controls the mobile station to communicate by radio using the cell of the frequency other than the banned frequency after the data reception, by notifying the mobile station of the banned frequency.    
   
   
       10 . The radio network controller according to  claim 1 , wherein the cell selector selects the cell to use after at least one of reception of data by broadcast, reception of data by multicast, and reception of data transmitted by a high speed downlink packet access.  
   
   
       11 . A mobile station comprising: 
 a radio communication unit configured to communicate by radio; and    a communication controller configured to select a cell to use after data reception and control the radio communication unit to communicate by radio using a selected cell after the data reception.    
   
   
       12 . The mobile station according to  claim 11 , wherein the communication controller selects the cell to use after the data reception based on a selection result of the cell to use after the data reception by a radio network controller.  
   
   
       13 . The mobile station according to  claim 12 , wherein 
 the selection result includes a frequency of the cell to use after the data reception, and    the communication controller selects the cell of the frequency as the cell to use after the data reception.    
   
   
       14 . The mobile station according to  claim 12 , wherein, 
 the selection result includes cells to use by mobile stations after the data reception and ratios of the mobile stations using respective cells, and    the communication controller selects the cell to use after the data reception based on the ratios of the mobile stations.    
   
   
       15 . The mobile station according to  claim 11 , wherein the communication controller selects the cell to use after the data reception based on at least one of a use history of the cell, a use status of radio resources in the cell, the number of mobile stations being present in the cell, a propagation path state in the cell, neighboring cell information about the cell neighboring the cell to use at the data reception, and communication quality in the cell.  
   
   
       16 . The mobile station according to  claim 15 , wherein the communication controller selects a cell of a frequency used just before the data reception as the cell to use after the data reception.  
   
   
       17 . The mobile station according to  claim 15 , further comprising: 
 a cell information storage unit configured to store the use history of the cell, wherein    the communication controller selects the cell to use after the data reception by referring to the cell information storage unit.    
   
   
       18 . The mobile station according to  claim 11 , wherein the communication controller selects the cell to use after the data reception randomly.  
   
   
       19 . The mobile station according to  claim 11 , wherein the communication controller selects a cell of a frequency other than a banned frequency, which the mobile station is banned from using and is determined by the radio network controller, as the cell to use after the data reception  
   
   
       20 . The mobile station according to  claim 11 , wherein the communication controller selects the cell to use after at least one of reception of data by broadcast, reception of data by multicast, and reception of data transmitted by a high speed downlink packet access.  
   
   
       21 . A mobile communication method comprising: 
 selecting a cell to use by a mobile station after data reception; and    communicating by radio using a selected cell after the data reception by the mobile station.