Communication methods, communication device station and access point
AssigneeCanon Kabushiki Kaisha
InventorsPatrice NEZOU, Stéphane BARON, Pascal VIGER
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Abstract
The present invention provides a new trigger frame dedicated to NDP feedback procedure. This NDP feedback trigger frame comprises a specific field allowing stations (non-AP nodes) receiving this trigger frame to identify it as being a dedicated NDP feedback trigger frame. Thanks to this specific field, a receiving station knows that a NDP feedback procedure has started and that a NDP feedback is expected by the access point. The present invention also provides for communication methods using this NDP feedback trigger frame, communication device station and access point configured to implement these methods, and also a wireless communication network comprising such devices.
Claims25
A communication method in a wireless communication network comprising an access point and a plurality of stations,
- the method comprising, at the access point:
- accessing a communication channel to send a trigger frame reserving a transmission opportunity on the communication channel and defining resource units, RUs, forming the communication channel for the stations to transmit data to the access point;
- wherein the trigger frame comprises a first field allowing stations to identify the trigger frame as being dedicated to initiate collection of feedbacks from stations of the plurality during the reserved transmission opportunity;
- and
- wherein the trigger frame further comprises a second field indicating a type of feedbacks to be collected from the stations.
A communication method in a wireless communication network comprising an access point and a plurality of stations,
- the method comprising, at a station:
- receiving a trigger frame reserving a transmission opportunity on the communication channel and defining resource units, RUs, forming the communication channel for the stations to transmit data to the access point;
- wherein the trigger frame comprises a first field allowing the station to identify the trigger frame as being dedicated to initiate collection of feedbacks from stations of the plurality during the reserved transmission opportunity;
- and
- wherein the trigger frame further comprises a second field indicating a type of feedbacks to be collected from the stations.
An access point in a wireless communication network also comprising a plurality of stations, the access point comprising at least one microprocessor configured for carrying out the following step:
- accessing a communication channel to send a trigger frame reserving a transmission opportunity on the communication channel and defining resource units, RUs, forming the communication channel for the stations to transmit data to the access point;
- wherein the trigger frame comprises a first field allowing stations to identify the trigger frame as being dedicated to initiate collection of feedbacks from stations of the plurality during the reserved transmission opportunity;
- and
- wherein the trigger frame further comprises a second field indicating a type of feedbacks to be collected from the stations.
A communication device station in a wireless communication network comprising an access point and a plurality of stations, the communication device comprising at least one microprocessor configured for carrying out the following step:
- receiving a trigger frame reserving a transmission opportunity on the communication channel and defining resource units, RUs, forming the communication channel for the stations to transmit data to the access point;
- wherein the trigger frame comprises a first field allowing the station to identify the trigger frame as being dedicated to initiate collection of feedbacks from stations of the plurality during the reserved transmission opportunity;
- and
- wherein the trigger frame further comprises a second field indicating a type of feedbacks to be collected from the stations.
A dedicated Null Data Packet (NDP) feedback trigger frame designed to be sent by an access point of a wireless communication network comprising a plurality of stations, the NDP feedback trigger frame comprising:
- a first field allowing the stations receiving the trigger frame to identify the trigger frame as being dedicated to initiate collection of feedbacks from stations of the plurality during a transmission opportunity reserved by the access point;
- and
- a second field indicating a type of feedbacks to be collected from the stations.
Dependencies are inferred from the claim text.