Radio communications system and radio communications method

A radio communications system including a network connecting radio station and a counterparty radio station, the network connecting radio station being a radio station connected to a network and the counterparty radio station being in radio communications with the network connecting radio station, wherein

• the network connecting radio station includes
• an information obtaining unit which obtains information indicating a radio communications condition of one or more radio stations surrounding the network connecting radio station from the one or more surrounding radio stations via the network, the information indicating the radio communications condition of the radio station including information on a frequency used by the radio station and information on a waveform feature amount which exhibits a statistical characteristic of a signal waveform transmitted by the radio station;
• an information reporting unit which reports, to the counterparty radio station, all or some of information indicating a radio communications condition obtained from the surrounding radio station;
• and
• a radio resource parameter determining unit which determines, based on the information indicating the radio communications condition of the surrounding radio station, information on a measured value of the waveform feature amount that is reported from the counterparty radio station, and information on reliability, whether communications can be conducted between the network connecting radio station and the counterparty radio station, and a radio resource parameter to be used when the communications are permitted, wherein the counterparty radio station includes
• a waveform information extracting unit which calculates, for each of one or more waveform feature amounts reported from the network connecting radio station, the measured value of the waveform feature amount of a signal received from another of the radio stations;
• a reliability determining unit which demodulates a signal received from the surrounding radio station and determines the reliability of the demodulating;
• and
• a received status reporting unit which reports, to the network connecting radio station, information on the measured value of the waveform feature amount calculated at the waveform information extracting unit and information indicating the reliability determined at the reliability determining unit.

A radio communications system including a network connecting radio station and a counterparty radio station, the network connecting radio station being a radio station connected to a network and the counterparty radio station being in radio communications with the network connecting radio station, wherein

• the network connecting radio station includes
• an information obtaining unit which obtains, from one or more surrounding radio stations via the network, information indicating a radio communications condition of one of the radio stations surrounding the network connecting radio station, the information indicating a radio communications condition of the radio station including information on a frequency used by the radio station and information on a waveform feature amount which exhibits a statistical characteristic of a signal waveform transmitted by the radio station;
• an information reporting unit which reports, to the counterparty radio station, all or some of information indicating the radio communications condition obtained from the surrounding radio station, and
• a reliability determining unit which demodulates the signal received from the surrounding radio station and determines the reliability of the demodulated result;
• a radio resource parameter determining unit which determines, based on the information indicating the radio communications condition of the surrounding radio station, information on a measured value of the waveform feature amount that is reported from the counterparty radio station, and information on reliability, a radio resource parameter to be used when communications are permitted, and whether the communications can be conducted between the network connecting radio station and the counterparty radio station, wherein the counterparty radio station includes
• a waveform information extracting unit which calculates, for each of one or more waveform feature amounts reported from the network connecting radio station, the measured value of the waveform feature amount of a signal received from another of the radio stations;
• and
• a received status reporting unit which reports, to the network connecting radio station, information indicating a measured value of a waveform feature amount that is calculated at the waveform information extracting unit, and information on a reliability determined at the reliability determining unit.

A method of radio communications in a network connecting radio station and a counterparty radio station, the network connecting radio station being a radio station connected to a network and the counterparty radio station being in radio communications with the network connecting radio station, wherein a procedure to be performed at the network connecting radio station includes

• an information obtaining step of obtaining, from one or more surrounding radio stations via the network, information indicating a radio communications condition of the radio station surrounding the network connecting radio station, the information indicating the radio communications condition of the radio station including information on a frequency used by the radio station and information on a waveform feature amount which exhibits a statistical characteristic of a signal waveform transmitted by the radio station;
• an information reporting step of reporting, to the counterparty radio station, all or some of information indicating the radio communications condition obtained from the surrounding radio station, and
• a radio resource parameter determining step of determining whether communications can be conducted between the network connecting radio station and the counterparty radio station and a radio resource parameter to be used when the communications are permitted, based on the information indicating the radio communications condition of the surrounding radio station and information on a measured value of the waveform feature amount that is reported from the counterparty radio station, wherein
• the procedure performed at the counterparty radio station includes
• a waveform information extracting step of calculating, for each of one or more of the waveform feature amounts reported from the network connecting radio station, the measured value of the waveform feature amount of a signal received from another of the radio stations;
• and
• a received status reporting step of reporting, to the network connecting radio station, a measured value of the waveform feature amount calculated in the waveform information extracting step.

A method of radio communications in a network connecting radio station and a counterparty radio station, the network connecting radio station being a radio station connected to a network and the counterparty radio station being in radio communications with the network connecting radio station, wherein

• a procedure to be performed at the network connecting radio station includes
• an information obtaining step of obtaining, from one or more surrounding radio stations via the network, information indicating a radio communications condition of the radio station surrounding the network connecting radio station, the information indicating the radio communications condition of the radio station including information on a frequency used by the radio station and information on a waveform feature amount which exhibits a statistical characteristic of a signal waveform transmitted by the radio station;
• an information reporting step of reporting, to the counterparty radio station, all or some of information indicating the radio communications condition obtained from the surrounding radio station, and
• a radio resource parameter determining step of determining whether communications can be conducted between the network connecting radio station and the counterparty radio station and a radio resource parameter to be used when the communications are permitted, based on the information indicating the radio communications condition of the surrounding radio station, information on a measured value of the waveform feature amount that is reported from the counterparty radio station, and information on reliability, wherein
• the procedure performed at the counterparty radio station includes
• a waveform information extracting step of calculating, for each of one or more waveform feature amounts reported from the network connecting radio station, the measured value of the waveform feature amount of a signal received from another of the radio stations;
• a reliability determining step of demodulating the signal received from the surrounding radio station and determining the reliability of the demodulated result;
• and
• a received status reporting step of reporting, to the network connecting radio station, information indicating a measured value of the waveform feature amount that is calculated in the waveform information extracting step and information indicating the reliability determined in the reliability determining step.

A method of radio communications, the radio communications including a network connecting radio station and a counterparty radio station, the network connecting radio station being a radio station connected to a network and the counterparty radio station being in radio communications with the network connecting radio station, wherein

• a procedure to be performed at the network connecting radio station includes
• an information obtaining step of obtaining, from one or more surrounding radio stations via the network, information indicating a radio communications condition of the radio station surrounding the network connecting radio station, the information indicating a radio communications condition of the radio station including information on a frequency used by the radio station and information on a waveform feature amount which exhibits a statistical characteristic of a signal waveform transmitted by the radio station;
• an information reporting step of reporting, to the counterparty radio station, all or some of information indicating the radio communications condition obtained from the surrounding radio station, and
• a reliability determining step of demodulating the signal received from the surrounding radio station and determining the reliability of the demodulation;
• a radio resource parameter determining step of determining whether communications can be conducted between the network connecting radio station and the counterparty radio station and a radio resource parameter to be used when the communications are permitted, based on the information indicating the radio communications condition of the surrounding radio station, information on a measured value of the waveform feature amount that is reported from the counterparty radio station, and information on reliability, wherein
• the procedure performed at the counterparty radio station includes
• a waveform information extracting step of calculating, for each of the one or more waveform feature amounts reported from the network connecting radio station, the measured value of the waveform feature amount of a signal received from another of the radio stations;
• and
• a received status reporting step of reporting, to the network connecting radio station, information indicating a measured value of the waveform feature amount that is calculated in the waveform information extracting step and information indicating the reliability determined in the reliability determining step.