Patent ID: 11923926
Assignee: INTERNATIONAL SEMICONDUCTOR GROUP
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. A wireless communication device, comprising:
a receiver configured to receive a plurality of first frames each including first information required for generation of a trigger frame for uplink multi-user transmission; and
a transmitter configured to transmit a second frame generated on the basis of the first information included in the plurality of first frames, the second frame being the trigger frame and designating at least one target terminal for the uplink multi-user transmission, wherein
each of the first frames is transmitted by a respective one of terminals, and each of the terminals accesses a wireless medium using an access category associated with the first frame under CSMA/CA (Carrier Sense Multiple Access with Carrier Avoidance) to transmit the first frame,
the access category associated with the first frame is one of a plurality of access categories,
the second frame instructs the at least one target terminal to transmit third frames including data in elapse of a predetermined time after the second frame is received,
the first information included in the plurality of first frames includes:
information indicating an access category having a highest transmission priority among the plurality of access categories for the uplink multi-user transmission wherein the access category having the highest transmission priority is an access category most desirable to transmit by each of the terminals and is one selected from the plurality of access categories by each of the terminals,
the receiver is configured to receive second information indicating a communication scheme of a multi-user transmission desired by the terminals,
the wireless communication device further comprises a controller configured to select a plurality of target terminals for the multi-user transmission from terminals which have transmitted the second information indicating a first communication scheme, and
the second frame includes information designating the plurality of target terminals.