Switching station, subscriber location information registration method, subscriber service information acquisition method, subscriber service information registration method, and subscriber service information transmission method

Abstract

A switching station etc., are provided. When a mobile station moves from an area of a switching station into an area of another switching station having a VLR which has accepted the maximum number of subscribers, the switching station registers subscriber location information about the mobile station in an HLR even through it cannot register the subscriber service information in its VLR. When a call origination signal is transmitted from the mobile station, the switching station performs call origination connection processing by acquiring the subscriber service information about the mobile station from the HLR. When call termination to the mobile station occurs, the switching station can perform call termination processing normally since the subscriber location information is correctly updated in the HLR. The switching station performs call termination processing by acquiring the subscriber service information from the HLR.

1 . A switching station comprising: 
 means for receiving a location registration signal from a mobile station; and    means for registering, when the location registration signal is received, subscriber location information about the mobile station that has transmitted the location registration signal in a second management unit managing subscriber information in a case where no subscriber service information can be newly registered in a first management unit provided for use with the switching station and managing subscriber information.    
   
   
       2 . The switching station as claimed in  claim 1 , wherein said first management unit is a VLR.  
   
   
       3 . The switching station as claimed in  claim 1 , wherein said second management unit is an HLR.  
   
   
       4 . A switching station comprising: 
 means for receiving a location registration signal from a mobile station; and    means for registering, when the location registration signal is received, subscriber service information about the mobile station that has transmitted the location registration signal in a management unit provided for use with another switching station and managing subscriber information in a case where no subscriber service information can be newly registered in a management unit provided for use with the switching station and managing subscriber information.    
   
   
       5 . The switching station as claimed in  claim 4 , wherein said management unit is a VLR.  
   
   
       6 . A switching station comprising: 
 means for registering, at a request from another switching station, subscriber service information in a management unit provided for use with the switching station and managing subscriber information; and    means for transmitting the subscriber service information registered in the management unit to said another switching station at a request from said another switching station.    
   
   
       7 . The switching station as claimed in  claim 6 , wherein said management unit is a VLR.  
   
   
       8 . A subscriber location information registration method comprising the steps of: 
 receiving, at a switching station, a location registration signal from a mobile station; and    registering, at the switching station, when the location registration signal is received, subscriber location information about the mobile station that has transmitted the location registration signal in a second management unit managing subscriber information in a case where no subscriber service information can be newly registered in a first management unit provided for use with the switching station and managing subscriber information.    
   
   
       9 . A subscriber service information registration method comprising the steps of: 
 receiving, at a first switching station, a location registration signal from a mobile station; and    registering, at the first switching station, when the location registration signal is received, subscriber service information about the mobile station that has transmitted the location registration signal in a management unit provided for use with a second switching station and managing subscriber information in a case where no subscriber service information can be newly registered in a management unit provided for use with the first switching station and managing subscriber information.    
   
   
       10 . A subscriber service information transmission method comprising the steps of: 
 registering, at a first switching station, at a request from a second switching station, subscriber service information in a management unit provided for use with the first switching station and managing subscriber information; and    transmitting, at the first switching station, the service information registered in the management unit to the second switching station at a request from the second switching station.