US 11,729,824 B2
Multi-user random access in a wireless network
Patrice Nezou, Liffre (FR); Stéphane Baron, Le Rheu (FR); Pascal Viger, Janze (FR); and Julien Sevin, Saint Aubin du Cormier (FR)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Appl. No. 16/497,740
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
PCT Filed Apr. 27, 2018, PCT No. PCT/EP2018/060988
§ 371(c)(1), (2) Date Sep. 25, 2019,
PCT Pub. No. WO2018/197716, PCT Pub. Date Nov. 1, 2018.
Claims priority of application No. 1706878 (GB), filed on Apr. 28, 2017; and application No. 1708775 (GB), filed on Jun. 1, 2017.
Prior Publication US 2020/0107363 A1, Apr. 2, 2020
Int. Cl. H04W 74/08 (2009.01); H04W 76/11 (2018.01); H04L 1/00 (2006.01); H04W 72/0446 (2023.01)
CPC H04W 74/0808 (2013.01) [H04L 1/0003 (2013.01); H04L 1/0061 (2013.01); H04W 72/0446 (2013.01); H04W 76/11 (2018.02)] 13 Claims
OG exemplary drawing
 
1. A wireless communication method in a wireless network comprising an access point and a plurality of stations, the method comprising, at one of the stations:
receiving a trigger frame from the access point, the trigger frame reserving a transmission opportunity on at least one communication channel of the wireless network, the transmission opportunity including random resource units that the stations may access using a contention scheme, wherein the trigger frame includes an association identifier (AID) and at least one transmission parameter for transmitting data on at least one of the random resource units;
determining, based at least on the at least one transmission parameter, one or more eligible resource units, among the random resource units included in the reserved transmission opportunity, for the station to contend for access for transmitting data;
updating at least one contention parameter for the contention scheme at the station based on the number of determined eligible resource unit or units, wherein the at least one contention parameter is not updated in a case where there is no eligible resource unit among the random resource units; and
contending for access to an eligible resource unit using the contention scheme based on the updated at least one contention parameter,
wherein determining an eligible resource unit comprises determining that the station is capable of transmitting data in that resource unit according to the at least one transmission parameter specified in the trigger frame for the resource unit.