Base station, method, computer readable medium, and system for radio communication for suppressing load of blind decoding using a control signal

A method, comprising:

• in a base station:
• generating a control signal in a control region, wherein the control signal includes:
• reference information assigned to each of a plurality of radio terminals, and
• information indicating a number of a plurality of sub frames over which a reference region is in a frame;
• generating a data signal that includes resource information for each of the plurality of radio terminals in the reference region, wherein
• the reference region is in a data region of the frame, and
• the reference information indicates a position of the reference region in the data region;
• and
• transmitting a radio signal in the frame to the plurality of radio terminals, wherein the frame includes the control region and the data region.

A non-transitory computer-readable medium having stored thereon, computer-executable instructions, which when executed by a computer, cause the computer to execute operations, the operations comprising:

• generating a control signal in a control region, wherein the control signal includes:
• reference information assigned to each of a plurality of radio terminals, and
• information indicating a number of a plurality of sub frames over which a reference region is in a frame;
• generating a data signal that includes resource information for each of the plurality of radio terminals in the reference region, wherein
• the reference region is in a data region of the frame, and
• the reference information indicates a position of the reference region in the data region;
• and
• transmitting a radio signal in the frame to the plurality of radio terminals, wherein the frame includes the control region and the data region.

A radio communication system, comprising:

• a plurality of radio terminals;
• and
• a base station configured to:
• generate a control signal which includes:
• reference information for the plurality of radio terminals, and
• information indicating a number of a plurality of sub frames over which a reference region is disposed in a frame;
• transmit the control signal in a control region of the frame;
• generate a data signal that includes second information, for the plurality of radio terminals, in the reference region, wherein
• the reference region is in a data region of the frame, and
• the reference information indicates a position of the reference region in the data region;
• and
• transmit a radio signal in the frame to the plurality of radio terminals.

A radio terminal, comprising:

• a central processing unit (CPU) configured to:
• receive, from a base station, a radio signal transmitted in a frame, wherein the frame includes a control region and a data region;
• acquire reference information for the radio terminal, from a control signal in the control region, wherein the control signal includes information indicating a number of a plurality of sub frames over which a reference region is in the frame;
• and
• acquire a data portion for the radio terminal from a data signal in the reference region within the data region,
• wherein the reference information indicates a position of the reference region in the data region.

A method, comprising:

• in a radio terminal:
• receiving a radio signal from a base station in a frame, wherein the frame includes a control region and a data region;
• acquiring reference information indicating a reference region, from a control signal in the control region, wherein
• the control signal includes information indicating a number of a plurality of sub frames over which the reference region is in the frame, and
• the reference information is for the radio terminal;
• and
• acquiring a data portion for the radio terminal from a data signal in the reference region in the data region,
• wherein the reference information indicates a position of the reference region in the data region.