US 12,238,774 B2
Enhanced management of ACs in multi-user EDCA transmission mode in wireless networks
Stéphane Baron, Le Rheu (FR); Patrice Nezou, Liffre (FR); and Pascal Viger, Janze (FR)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Oct. 11, 2022, as Appl. No. 18/045,756.
Application 18/045,756 is a continuation of application No. 17/084,479, filed on Oct. 29, 2020, granted, now 11,595,996.
Application 17/084,479 is a continuation of application No. 16/341,868, granted, now 10,893,539, issued on Jan. 12, 2021, previously published as PCT/EP2017/076339, filed on Oct. 16, 2017.
Claims priority of application No. 1617880 (GB), filed on Oct. 21, 2016.
Prior Publication US 2023/0113934 A1, Apr. 13, 2023
Int. Cl. H04W 74/0816 (2024.01); H04L 65/80 (2022.01); H04W 28/02 (2009.01); H04W 72/0453 (2023.01); H04W 72/121 (2023.01); H04W 74/00 (2009.01); H04W 84/12 (2009.01)
CPC H04W 74/0816 (2013.01) [H04L 65/80 (2013.01); H04W 28/0268 (2013.01); H04W 72/0453 (2013.01); H04W 72/121 (2013.01); H04W 74/006 (2013.01); H04W 84/12 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A communication device, comprising:
a transmitting unit configured to transmit data in an enhanced distributed channel access (EDCA), transmission opportunity (TXOP), using contention parameters;
a receiving unit configured to receive, from an access point, a beacon frame including a plurality of values for Multi-User enhanced distributed channel access timer (MUEDCATimer) which respectively correspond to a plurality of access categories (ACs), defined by IEEE802.11 series standards; and
a controlling unit configured to control the transmitting unit, in a case where data of a predetermined access category (AC) included in the plurality of ACs is successfully transmitted over a resource unit that is defined by IEEE802.11 series standards and is provided by the access point, so that first parameters are used as the contention parameters for a predetermined duration that is based on a value, among the received plurality of values, which corresponds to the predetermined AC, and the contention parameters are set back to second parameters different from the first parameters upon expiring the predetermined duration.