Communication device, communication method, and computer-readable storage medium
AssigneeCanon Kabushiki Kaisha
InventorMasatomo Ouchi
Life of this patent
Estimating the term…
Abstract
A communication device that forms a first Basic Service Set (BSS) communicates a radio frame including a preamble and a data field of a physical layer (PHY). The preamble includes an Extremely High Throughput (EHT) Signal Field (EHT-SIG-A). The EHT-SIG-A includes a subfield for setting a BSS color, and if the communication device and a first other communication device are to cooperatively transmit the radio frame to a second other communication device, a value of this subfield is set, without changing the BSS color used in a first BSS, based on the BSS color of a second BSS to which the second other communication device belongs.
Claims16
An access point apparatus that forms a first Basic Service Set (BSS), and transmits a radio frame including a preamble and a data field of a physical layer (PHY),
- wherein the preamble includes:
- a Legacy Short Training Field (L-STF);
- a Legacy Long Training Field (L-LTF) arranged immediately after the L-STF in the radio frame;
- a Legacy Signal Field (L-SIG) arranged immediately after the L-LTF in the radio frame;
- and
- a Second Signal Field arranged after the L-SIG in the radio frame, wherein
- the Second Signal Field includes a subfield for setting a BSS color, and
- in a case where the access point apparatus, operating as one of a coordinating access point and a coordinated access point, is to transmit the radio frame in a coordinated transmission designated to a single station apparatus, and another access point apparatus, operating as the other one of the coordinating access point and the coordinated access point, is to transmit another radio frame in the coordinated transmission designated to the same single station apparatus, a same value is set to the subfield of the radio frame transmitted by the access point apparatus and to the subfield of the another radio frame transmitted by the another access point apparatus,
- wherein the access point apparatus and the another access point apparatus perform the coordinated transmission by using a corresponding frequency channel in a corresponding transmission duration.
A communication method executed by an access point apparatus configured to form a first Basic Service Set (BSS), comprising:
- transmitting a radio frame including a preamble and a data field of a physical layer (PHY), wherein
- the preamble includes:
- a Legacy Short Training Field (L-STF);
- a Legacy Long Training Field (L-LTF) arranged immediately after the L-STF in the radio frame;
- a Legacy Signal Field (L-SIG) arranged immediately after the L-LTF in the radio frame;
- and
- a Second Signal Field arranged after the L-SIG in the radio frame wherein
- the Second Signal Field includes a subfield for setting a BSS color, and
- in a case where the access point apparatus, operating as one of a coordinating access point and a coordinated access point, is to transmit the radio frame in a coordinated transmission designated to a single station apparatus, and another access point apparatus, operating as the other one of the coordinating access point and the coordinated access point, is to transmit another radio frame in the coordinated transmission designated to the same single station apparatus, a same value is set to the subfield of the radio frame transmitted by the access point apparatus and to the subfield of the another radio frame transmitted by the another access point apparatus,
- wherein the access point apparatus and the another access point apparatus perform the coordinated transmission by using a corresponding frequency channel in a corresponding transmission duration.
A non-transitory computer-readable storage medium that stores a program configured to cause a computer included in an access point apparatus to:
- form a first Basic Service Set (BSS), and
- transmit a radio frame including a preamble and a data field of a physical layer (PHY), wherein
- the preamble includes:
- a Legacy Short Training Field (L-STF);
- a Legacy Long Training Field (L-LTF) arranged immediately after the L-STF in the radio frame;
- a Legacy Signal Field (L-SIG) arranged immediately after the L-LTF in the radio frame;
- and
- a Second Signal Field arranged after the L-SIG in the radio frame, wherein
- the Second Signal Field includes a subfield for setting a BSS color, and in a case where the access point apparatus, operating as one of a coordinating access point and a coordinated access point, is to transmit the radio frame in a coordinated transmission designated to a single station apparatus, and another access point apparatus, operating as the other one of the coordinating access point and the coordinated access point, is to transmit another radio frame in the coordinate transmission designated to the station apparatus, a same value is set to the subfield of the radio frame transmitted by the access point apparatus and to the subfield of the another radio frame transmitted by the another access point apparatus,
- wherein the access point apparatus and the another access point apparatus perform the coordinated transmission by using a corresponding frequency channel in a corresponding transmission duration.
Dependencies are inferred from the claim text.