Radio communication device for avoiding frequency collision among different radio control schemes

• US 7,085,535 B2
• Filed: 03/29/2002
• Issued: 08/01/2006
• Est. Priority Date: 03/29/2001
• Status: Active Grant

• Current Assignee: Kioxia Corporation
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Takagi, Masahiro, Inoue, Atsushi, Goto, Masataka, Esaka, Naoki
• Primary Examiner(s): Trost, William
• Assistant Examiner(s): DOAN, KIET M
• Application Number:
  US10/108,504
• Publication Number:
  US 20020142779A1
• Time in Patent Office: 1,586 Days
• Field of Search: 455/63.1, 455/63.4, 455/67.11, 455/67.15, 455/450, 455/550, 455/464, 455/119, 370/133, 370/380, 370/85.2, 370/85.3, 370/349, 370/446, 370/343, 370/345, 370/255, 370/252, 370/448
• US Class Current: 455/63.1
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/542 using measured or perceived quality

Abstract

A radio communication device is provided with a unit for acquiring a prediction information for a frequency, time or direction to be used by each one of the first radio control scheme of the radio communication device and a second radio control scheme of another surrounding radio communication device, and a unit for obtaining a predicted frequency, time or direction for which interferences between radio communications by the first radio control scheme and radio communications by the second radio control scheme are predicted to occur according to the prediction information, and control the radio communication unit to carry out radio communications by avoiding the predicted frequency, time or direction.

Claims

1. A radio communication device, comprising:

a radio communication unit configured to carry out radio communications by a first radio control scheme;

an acquisition unit configured to acquire a prediction information for at least one of a frequency, a time and a direction to be used by each one of the first radio control scheme of the radio communication device and a second radio control scheme of another radio communication device located within a communication possible range of the radio communication device; and

a collision avoiding unit configured to obtain a predicted frequency, a predicted time or a predicted direction for which interferences between radio communications by the first radio control scheme and radio communications by the second radio control scheme are predicted to occur according to the prediction information, and control the radio communication unit to carry out radio communications by avoiding the predicted frequency, the predicted time or the predicted direction,

wherein the radio communication unit is also configured to exchange the predicted information for the first radio control scheme acquired by the radio communication device, with the another radio communication device.

2. A radio communication device, comprising:

a radio communication unit configured to carry out radio communications by a first radio control scheme;

an acquisition unit configured to acquire a prediction information for at least one of a frequency, a time and a direction to be used by each one of the first radio control scheme of the radio communication device and a second radio control scheme of another radio communication device located within a communication possible range of the radio communication device; and

a collision avoiding unit configured to obtain a predicted frequency, a predicted time or a predicted direction for which interferences between radio communications by the first radio control scheme and radio communications by the second radio control scheme are predicted to occur according to the prediction information, and control the radio communication unit to carry out radio communications by avoiding the predicted frequency, the predicted time or the predicted direction,

wherein the radio communication unit is also configured to exchange the prediction information for the second radio control scheme acquired by the another radio communication device, with the another radio communication device.

3. A radio communication device, comprising:

a radio communication unit configured to carry out radio communications by a first radio control scheme;

an acquisition unit configured to acquire a prediction information for at least one of a frequency, a time and a direction to be used by each one of the first radio control scheme of the radio communication device and a second radio control scheme of another radio communication device located within a communication possible range of the radio communication device; and

a collision avoiding unit configured to obtain a predicted frequency, a predicted time or a predicted direction for which interferences between radio communications by the first radio control scheme and radio communications by the second radio control scheme are predicted to occur according to the prediction information, and control the radio communication unit to carry out radio communications by avoiding the predicted frequency, the predicted time or the predicted direction,

wherein the collision avoiding unit controls the radio communication unit to shorten a frame length of frames to be transmitted by the radio communication unit.

4. A radio communication device, comprising:

a radio communication unit configured to carry out radio communications by a first radio control scheme;

an acquisition unit configured to acquire a prediction information for at least one of a frequency, a time and a direction to be used by each one of the first radio control scheme of the radio communication device and a second radio control scheme of another radio communication device located within a communication possible range of the radio communication device; and

a collision avoiding unit configured to obtain a predicted frequency, a predicted time or a predicted direction for which interferences between radio communications by the first radio control scheme and radio communications by the second radio control scheme are predicted to occur according to the prediction information, and control the radio communication unit to carry out radio communications by avoiding the predicted frequency, the predicted time or the predicted direction,

wherein the collision avoiding unit controls the radio communication unit to temporarily change a modulation scheme from a normally used modulation scheme to a modulation scheme with higher interference tolerance at the predicted time.

5. A radio communication control method for a radio communication device having a radio communication unit configured to carry out radio communications by a first radio control scheme, a plurality of antennas being attached to the radio communication unit, the method comprising:

acquiring a prediction information for a frequency, a time and a an antenna to be used by each one of the first radio control scheme of the radio communication device and a second radio control scheme of another radio communication device located within a communication possible range of the radio communication device;

obtaining a predicted frequency, a predicted time and a predicted antenna for which interferences between radio communications by the first radio control scheme and radio communications by the second radio control scheme are predicted to occur according to the prediction information; and

controlling the radio communication unit to carry out radio communications by avoiding the predicted frequency, the predicted time and the predicted antenna.

6. A computer program product for causing a computer to function as a radio communication device having a radio communication unit configured to carry out radio communications by a first radio control scheme, a plurality of antennas being attached to the radio communication unit, the computer program product comprising:

a first computer program code for causing the computer to acquire a prediction information for a frequency, a time and an antenna to be used by each one of the first radio control scheme of the radio communication device and a second radio control scheme of another radio communication device located within a communication possible range of the radio communication device;

a second computer program code for causing the computer to obtain a predicted frequency, a predicted time and a predicted antenna for which interferences between radio communications by the first radio control scheme and radio communications by the second radio control scheme are predicted to occur according to the prediction information; and

a third computer program code for causing the computer to control the radio communication unit to carry out radio communications by avoiding the predicted frequency, the predicted time and the predicted antenna.

7. A radio communication device, comprising:

a radio communication unit configured to carry out radio communications by a first radio control scheme;

a plurality of antennas attached to the radio communication unit;

an acquisition unit configured to acquire a prediction information for a frequency, a time and an antenna to be used by each one of the first radio control scheme of the radio communication device and a second radio control scheme of another radio communication device located within a communication possible range of the radio communication device; and

a collision avoiding unit configured to obtain a predicted frequency, a predicted time and a predicted antenna for which interferences between radio communications by the first radio control scheme and radio communications by the second radio control scheme are predicted to occur according to the prediction information, and control the radio communication unit to carry out radio communications by avoiding the predicted frequency, the predicted time and the predicted antenna.

8. The radio communication device of claim 7, wherein the radio communication unit perceives which antenna is used for transmitting and receiving data, and the acquisition unit acquires the prediction information for the frequency and time and the prediction information for the antenna through which the prediction information for the frequency and time is received from the radio communication unit as a set.

9. The radio communication device of claim 7, further comprising an antenna selecting unit configured to select an antenna to be used among the plurality of antennas, wherein the acquisition unit gives the antenna selecting unit information for specifying each antenna and acquires the prediction information for the frequency and time for each antenna.