US 10,893,539 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)
Appl. No. 16/341,868
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
PCT Filed Oct. 16, 2017, PCT No. PCT/EP2017/076339
§ 371(c)(1), (2) Date Apr. 12, 2019,
PCT Pub. No. WO2018/073171, PCT Pub. Date Apr. 26, 2018.
Claims priority of application No. 1617880.8 (GB), filed on Oct. 21, 2016.
Prior Publication US 2019/0254072 A1, Aug. 15, 2019
Int. Cl. H04W 74/08 (2009.01); H04W 74/00 (2009.01); H04L 29/06 (2006.01); H04W 28/02 (2009.01); H04W 72/04 (2009.01); H04W 72/12 (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)] 15 Claims
OG exemplary drawing
 
1. A communication method in a communication network comprising a plurality of nodes, at least one node comprising a plurality of traffic queues for serving data traffic at different priorities; each traffic queue being associated with a respective queue backoff engine for computing, from contention parameters, a respective queue backoff value to be used to contend for access to a communication channel in order to transmit data stored in the respective traffic queue in an enhanced distributed channel access (EDCA) transmission opportunity (TXOP);
the method comprising, at the node:
using a plurality of timers, each one associated with one of the traffic queues, each timer counting down a predetermined duration during which the contention parameters remain set to multi-user EDCA (MU-EDCA) parameters for the corresponding traffic queue before being set back to EDCA parameters different from the MU-EDCA parameters.