US 12,368,477 B2
Coordinated transmission control method, apparatus, and system
Xiangbai Liao, Wuhan (CN); Yingzhuang Liu, Wuhan (CN); and Jian Yu, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on May 15, 2023, as Appl. No. 18/317,619.
Application 18/317,619 is a continuation of application No. 16/931,551, filed on Jul. 17, 2020, granted, now 11,683,077.
Application 16/931,551 is a continuation of application No. PCT/CN2019/072313, filed on Jan. 18, 2019.
Claims priority of application No. 201810054522.8 (CN), filed on Jan. 19, 2018.
Prior Publication US 2023/0283330 A1, Sep. 7, 2023
Int. Cl. H04B 7/0456 (2017.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04L 25/02 (2006.01); H04W 24/08 (2009.01); H04W 28/18 (2009.01); H04W 84/12 (2009.01); H04W 92/20 (2009.01)
CPC H04B 7/0456 (2013.01) [H04B 7/0617 (2013.01); H04L 5/0073 (2013.01); H04L 25/0202 (2013.01); H04W 24/08 (2013.01); H04W 28/18 (2013.01); H04W 84/12 (2013.01); H04W 92/20 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A coordinated transmission control method, wherein the method comprises:
receiving, by a secondary access point (AP), a coordinated transmission request carrying negotiation parameter information from a primary AP, the negotiation parameter information comprising a quantity of spatial flows; and
in response to determining, by the secondary AP, based on the negotiation parameter information, that the secondary AP is able to perform coordinated transmission with the primary AP, sending, by the secondary AP, first response information to the primary AP indicating that the secondary AP is able to perform coordinated transmission;
receiving, by the secondary AP, interference test information from the primary AP, wherein the information test information is received based on a receive equalization matrix used to prevent the primary AP from causing interference to data reception performed by the secondary AP, the receive equalization matrix being selected by the secondary AP in response to a comparison between the quantity of spatial flows and a quantity of antennas of the primary AP, and a comparison between the quantity of antennas of the primary AP and a quantity of antennas of the secondary AP; and
determining, by the secondary AP based on an interference test result of the interference test information, whether to perform coordinated transmission.