Communication apparatus, communication method, and communication system

A control station for controlling wireless communications, comprising:

• a transmitter configured to transmit a wireless coordination signal in a first frequency band to a wireless communication station and another wireless control station, said wireless coordination signal including scheduling information that manages direct communications in a second frequency band between said wireless communication station and another wireless communication station;
• and
• a processor that assigns communication resources for the direct communications in the second frequency band, a lowest frequency of said first frequency band being 1 GHz or higher, wherein
• the control station communicates with the wireless communication station only via the first frequency band and the wireless communication station communicates with the another wireless communication station only via the second frequency band by performing a Request to Send (RTS)/Clear to Send (CTS) procedure over the second frequency band with the another wireless communication station during a priority use period allocated to the wireless communication station according to the scheduling information.

A wireless communications method, comprising:

• receiving a wireless coordination signal in a first frequency band from a control station, said wireless coordination signal including scheduling information that manages direct communications in a second frequency band between a wireless communication station and another wireless communication station;
• and
• establishing the direct wireless communications between said wireless communication station and said another wireless communication station in accordance with said scheduling information, a lowest frequency of said first frequency band being 1 GHz or higher, wherein
• the wireless communication station communicates with the control station only via the first frequency band and communicates with the another wireless communication station only via the second frequency band by performing a Request to Send (RTS)/Clear to Send (CTS) procedure over the second frequency band with the another wireless communication station during a priority use period allocated to the wireless communication station according to the scheduling information.

A wireless communications method, comprising:

• assigning with a processor communication resources for direct communications in a second frequency band between wireless communication stations;
• and
• transmitting a wireless coordination signal in a first frequency band to a wireless communication station and another wireless control station, said wireless coordination signal including scheduling information that manages an establishment of the direct communications between said wireless communication station and another wireless communication station, wherein a lowest frequency of said first frequency band being 1 GHz or higher, wherein
• the wireless communication station receives the coordination signal only via the first frequency band and communicates with the another wireless communication station only via the second frequency band by performing a Request to Send (RTS)/Clear to Send (CTS) procedure over the second frequency band with the another wireless communication station during a priority use period allocated to the wireless communication station according to the scheduling information.

A wireless communication system comprising:

• a control station including
• a transmitter configured to transmit a wireless coordination signal in a first frequency band to a wireless communication station and another wireless control station, said wireless coordination signal including scheduling information that manages direct communications in a second frequency band between said wireless communication station and another wireless communication station, and
• a processor that assigns communication resources for the direct communications in the second frequency band, a lowest frequency of said first frequency band being 1 GHz or higher;
• and
• the wireless communication communications station that includes
• a wireless transceiver having a first frequency receiver and a second frequency transceiver,
• said first frequency receiver being configured to receive the wireless coordination signal in the first frequency band, and
• said second frequency transceiver being configured to perform direct wireless communications in a second frequency band with the another wireless communication station in accordance with said scheduling information, wherein
• the wireless communication station communicates with the control station only via the first frequency band and communicates with the another wireless communication station only via the second frequency band by performing a Request to Send (RTS)/Clear to Send (CTS) procedure over the second frequency band with the another wireless communication station during a priority use period allocated to the wireless communication station according to the scheduling information.

A wireless communications method comprising:

• assigning with a processor of a control station communication resources for direct communications between wireless communication stations in a second frequency band;
• and
• transmitting a wireless coordination signal in a first frequency band to a wireless communication station and another wireless control station, said wireless coordination signal including scheduling information that manages establishment of direct communications between said wireless communication station and another wireless communication station, wherein a lowest frequency of said first frequency band being 1 GHz or higher;
• receiving at the wireless communication station the wireless coordination signal;
• and
• establishing the direct wireless communications in the second frequency band in accordance with said scheduling information, wherein
• the wireless communication station communicates with the control station only via the first frequency band and communicates with the another wireless communication station only via the second frequency band by performing a Request to Send (RTS)/Clear to Send (CTS) procedure over the second frequency band with the another wireless communication station during a priority use period allocated to the wireless communication station according to the scheduling information.