Radio communication system and communication method thereof

Abstract

The present invention provides a radio communication system that enables handovers between radio base stations to be conducted at a short time using a mobile communication terminal having one radio communication part. A pseudo radio communication control part in a mobile communication terminal links with a packet transfer part and a remote radio control part in a radio bridge device to enable operation as though a radio communication part disposed in the radio bridge device were directly connected to the mobile communication terminal. Thus, even when radio communication parts are disposed in a plurality of terminals, by using the pseudo radio communication control part instead of a radio communication control part, an application can carry out control as though all the radio communication parts were connected in the same terminal.

1 . A radio communication system that conducts a handover between radio base stations at a short time, wherein, 
 a mobile communication terminal includes a first radio communication part that communicates with a first base station, a radio bridge device includes a second radio communication part that communicates with a second base station, and the mobile communication terminal includes a first information processing means that carries out processing of information of the first radio communication part and the second radio communication part.    
   
   
       2 . The radio communication system according to  claim 1 , wherein the first information processing means includes a radio communication control part that controls the first radio communication part, a pseudo radio communication control part that controls the second radio communication part, and a handover control part that controls a handover between the first and second radio communication parts through the radio communication control part and the pseudo radio communication control part.  
   
   
       3 . The radio communication system according to  claim 2 , wherein the pseudo radio communication control part and the second radio communication part are connected through communication parts that are respectively provided in the mobile communication terminal and the radio bridge device.  
   
   
       4 . The radio communication system according to  claim 3 , which includes a second information processing means between the second radio communication part in the radio bridge device and the communication part in the radio bridge device, wherein the second information processing means includes a packet transfer part that conducts transfer of packets through the second radio communication part, and a remote radio control part that performs status setting and status acquisition of the second radio communication part.  
   
   
       5 . The radio communication system according to  claim 1 , wherein a plurality of radio bridge devices are provided.  
   
   
       6 . The radio communication system according to  claim 1 , wherein the mobile communication terminal and the radio bridge device are provided in the same train, airplane or automobile.  
   
   
       7 . A communication method for a radio communication system that conducts a handover between radio base stations at a short time, the system comprising a mobile communication terminal including a first radio communication part that communicates with a first base station, and a radio bridge device including a second radio communication part that communicates with a second base station, wherein the communication method includes a first information processing step that carries out processing of information of the first radio communication part and the second radio communication part in the mobile communication terminal.  
   
   
       8 . The communication method according to  claim 7 , wherein the first information processing step includes a handover control step that controls a handover between the first and the second radio communication parts.  
   
   
       9 . The communication method according to  claim 7 , which includes a second information processing step that performs processing of information in the radio bridge device, wherein the second information processing step includes a packet transfer step that performs a packet transfer through the second radio communication part and a remote radio control step that carries out status setting and status acquisition of the second radio communication part.  
   
   
       10 . The communication method according to  claim 7 , wherein a plurality of the radio bridge devices are provided.  
   
   
       11 . The communication method according to  claim 7 , wherein the mobile communication terminal and the radio bridge device are provided in the same train, airplane or automobile.