Communication control device, program, communication control method, and terminal device

Abstract

There is provided a communication control device including an acquisition unit configured to acquire system information of a frequency band that is used in a small cell that is partially or entirely overlapped by a macro cell, and a control unit configured to control downlink transmission of the system information in the macro cell. The control unit notifies a terminal device positioned within the macro cell of radio resource that is used in the downlink transmission.

1 . A communication control device comprising:
 an acquisition unit configured to acquire system information of a frequency band that is used in a small cell that is partially or entirely overlapped by a macro cell; and   a control unit configured to control downlink transmission of the system information in the macro cell,   wherein the control unit notifies a terminal device positioned within the macro cell of radio resource that is used in the downlink transmission.   
     
     
         2 . The communication control device according to  claim 1 , wherein the radio resource is resource of a frequency band that is used in the macro cell and the resource that is not used in transmission of the system information of the frequency band. 
     
     
         3 . The communication control device according to  claim 2 , wherein the radio resource is not used in transmission of system information of a frequency band that is used in another small cell either. 
     
     
         4 . The communication control device according to  claim 2 , wherein the radio resource is resource of a physical downlink shared channel. 
     
     
         5 . The communication control device according to  claim 2 , wherein updating of the system information of the frequency band that is used in the small cell is notified of independently of updating of the system information of the frequency band that is used in the macro cell. 
     
     
         6 . The communication control device according to  claim 5 , wherein updating of the system information of the frequency band that is used in the small cell is also notified of independently of updating of system information of a frequency band that is used in another small cell. 
     
     
         7 . The communication control device according to  claim 5 , wherein, for the updating of the system information of the frequency band that is used in the small cell, information pertaining to the updating is notified of along with the radio resource. 
     
     
         8 . The communication control device according to  claim 2 , wherein the radio resource is notified of using radio resource for notification that has a predetermined positional relation with another radio resource that is used in transmission of a predetermined information block included in the system information of the frequency band used in the macro cell. 
     
     
         9 . The communication control device according to  claim 8 , wherein the another radio resource is resource positioned within a predetermined range in a time direction and a frequency direction. 
     
     
         10 . The communication control device according to  claim 8 , wherein the predetermined positional relation is a positional relation that has a predetermined offset with the another radio resource in a time direction or a frequency direction. 
     
     
         11 . The communication control device according to  claim 2 , wherein the radio resource is notified of through signaling to a terminal device that is in a connection state in the macro cell. 
     
     
         12 . The communication control device according to  claim 2 , wherein the control unit also notifies small cell identification information for identifying the small cell along with the radio resource. 
     
     
         13 . The communication control device according to  claim 1 , wherein the system information of the frequency band that is used in the small cell is not transmitted in the small cell. 
     
     
         14 . A program causing a computer to function as:
 an acquisition unit configured to acquire system information of a frequency band that is used in a small cell that is partially or entirely overlapped by a macro cell; and   a control unit configured to control downlink transmission of the system information in the macro cell,   wherein the control unit notifies a terminal device positioned within the macro cell of radio resource that is used in the downlink transmission.   
     
     
         15 . A communication control method comprising:
 acquiring system information of a frequency band that is used in a small cell that is partially or entirely overlapped by a macro cell;   controlling downlink transmission of the system information in the macro cell; and   notifying a terminal device positioned within the macro cell of radio resource that is used in the downlink transmission.   
     
     
         16 . A communication control device comprising:
 a generation unit configured to generate system information of a frequency band that is used in a small cell that is partially ore entirely overlapped by a macro cell; and   a provision unit configured to provide the system information to the device that is a device controlling downlink transmission of the system information in the macro cell and notifying a terminal device positioned within the macro cell of radio resource that is used in the downlink transmission.   
     
     
         17 . A program causing a computer to function as:
 a generation unit configured to generate system information of a frequency band that is used in a small cell that is partially or entirely overlapped by a macro cell; and   a provision unit configured to provide the system information to a device that is a device controlling downlink transmission of the system information in the macro cell and notifying a terminal device positioned within the macro cell of radio resource that is used in the downlink transmission.   
     
     
         18 . A communication control method comprising:
 generating system information of a frequency band that is used in a small cell that is partially or entirely overlapped by a macro cell; and   providing the system information to a device that is a device controlling downlink transmission of the system information in the macro cell and notifying a terminal device positioned within the macro cell of radio resource that is used in the downlink transmission.   
     
     
         19 . A terminal device comprising:
 a wireless communication unit configured to receive system information of a frequency band that is used in a small cell that is partially or entirely overlapped by a macro cell when the terminal device is positioned within the macro cell; and   an acquisition unit configured to acquire information transmitted using radio resource as the system information when the terminal device is positioned within the macro cell and the radio resource that is used in downlink transmission of the system information is notified of.   
     
     
         20 . A communication control method comprising:
 receiving system information of a frequency band that is used in a small cell that is partially or entirely overlapped by a macro cell when a terminal device is positioned within the macro cell; and   acquiring information transmitted using radio resource as the system information when the terminal device is positioned within the macro cell and the radio resource that is used in downlink transmission of the system information is notified of.