Control station device, transmitting station device, communication method, and communication system
AssigneeNippon Telegraph and Telephone Corporation
InventorsJun Mashino, Takatoshi Sugiyama
Life of this patent
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Abstract
In a communication system configured by a transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers, a superposed rate which is a rate in which a superposed band in which interference is occurring is used in a used frequency band used for transmitting the multicarrier signal is set so as to increase frequency utilization efficiency of the used frequency band, and the multicarrier signal is transmitted using a spectrum allocated in accordance with the set superposed rate.
Claims26
A communication method in a communication system configured by a transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers, the communication method comprising:
- a control step of setting a superposed rate which is a rate in which a superposed band in which interference is occurring is used in a used frequency band used for transmitting the multicarrier signal so as to increase frequency utilization efficiency of the used frequency band;
- and
- a transmitting step of transmitting the multicarrier signal using a spectrum allocated in accordance with the set superposed rate.
A control station device for determining an arrangement of a spectrum when three or more communication systems respectively configured by a transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers simultaneously perform communication, the control station device comprising:
- an interference signal detecting section which detects an interference signal in a superposed band with another communication system in the spectrum;
- a spectrum arranging section which derives a superposed rate from a bandwidth of each spectrum and a predetermined superposed bandwidth in which each spectrum is superposed on another spectrum and which arranges each spectrum so that the superposed rate of each spectrum is the same;
- a spectrum allocating section which allocates a spectrum arranged in a communication system in which the transmitting station device, which transmits the multicarrier signal using the allocated spectrum, communicates with the receiving station device, which receives a multicarrier signal addressed to its own receiving station device by recognizing the superposed band with the other communication system in the arranged spectrum, by applying interference suppressing technology to the superposed band, and by error-correction decoding a signal;
- and
- a control information distributing section which reports the allocated spectrum to the transmitting station device of its own communication system and another communication system.
A transmitting station device in a communication system configured by the transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers, the transmitting station device comprising:
- a control section which sets a superposed rate which is a rate in which a superposed band in which interference is occurring is used in a used frequency band used for transmitting the multicarrier signal so as to increase frequency utilization efficiency of the used frequency band;
- and
- a transmitting section which transmits the multicarrier signal using a spectrum allocated in accordance with the set superposed rate.
A communication system for determining an arrangement of a spectrum when three or more communication systems respectively configured by a transmitting station device and a receiving station device for transmitting and receiving a multicarrier signal using a spectrum including a plurality of subcarriers simultaneously perform communication, the communication system comprising:
- a spectrum arranging section which derives a superposed rate from a bandwidth of each spectrum and a predetermined superposed bandwidth in which each spectrum is superposed on another spectrum and which arranges each spectrum so that the superposed rate of each spectrum is the same;
- a spectrum allocating section which allocates the arranged spectrum;
- a transmitting section which transmits the multicarrier signal using the allocated spectrum;
- and
- a receiving section which receives the multicarrier signal addressed to its own receiving section by recognizing a superposed band with another communication system in the allocated spectrum, by applying interference suppressing technology to the superposed band, and by error-correction decoding a signal.
Dependencies are inferred from the claim text.