US 11,812,467 B2
Emission of a signal in unused resource units to increase energy detection of an 802.11 channel
Pascal Viger, Janze (FR); Patrice Nezou, Saint Sulpice la Foret (FR); Stéphane Baron, Le Rheu (FR); and Romain Guignard, Rennes (FR)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on May 12, 2020, as Appl. No. 16/872,869.
Application 16/872,869 is a continuation of application No. 15/738,504, granted, now 10,681,731, previously published as PCT/EP2016/064005, filed on Jun. 17, 2016.
Claims priority of application No. 1511149 (GB), filed on Jun. 24, 2015.
Prior Publication US 2020/0275486 A1, Aug. 27, 2020
Int. Cl. H04W 74/08 (2009.01); H04W 84/12 (2009.01)
CPC H04W 74/0808 (2013.01) [H04W 84/12 (2013.01)] 15 Claims
OG exemplary drawing
 
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.