CPC H04W 74/0808 (2013.01) [H04W 84/12 (2013.01)] | 15 Claims |
1. A communication apparatus comprising:
a transmission unit configured to transmit a trigger frame including first information indicating a plurality of resource units splitting a communication channel in a frequency domain and second information for determining whether a sensing of energy of the communication channel is required,
wherein, in a case where the second information indicates that the sensing of the energy of the communication channel is required, at least one other communication apparatus identified by an AID (Association ID) included in the trigger frame senses the energy of the communication channel,
wherein the at least one other communication apparatus does not transmit a signal in a case where the sensed energy exceeds a predetermined threshold, and otherwise transmits a signal on at least one of the plurality of resource units; and
a receiving unit configured to receive the signal transmitted from the at least one other communication apparatus in response to the trigger frame.
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