US 12,041,652 B2
Channel access method and device, and storage medium
Bo Zhang, Guangdong (CN); Kaiying Lv, Guangdong (CN); and Zhiqiang Han, Guangdong (CN)
Assigned to ZTE Corporation, Shenzhen (CN)
Filed by ZTE Corporation, Guangdong (CN)
Filed on Feb. 28, 2022, as Appl. No. 17/682,881.
Application 17/682,881 is a continuation of application No. 16/609,065, granted, now 11,265,913, previously published as PCT/CN2018/083187, filed on Apr. 16, 2018.
Claims priority of application No. 201710293298.3 (CN), filed on Apr. 28, 2017.
Prior Publication US 2022/0256588 A1, Aug. 11, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 74/00 (2009.01); H04W 74/06 (2009.01)
CPC H04W 74/002 (2013.01) [H04W 74/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A channel access method implemented at a wireless station, comprising:
after a radio frame is received, determining that the radio frame is an overlapping basic service set (OBSS) radio frame;
subsequent to determining that the radio frame is an OBSS radio frame, determining that the OBSS radio frame prohibits a spatial multiplexing based on a specified type of radio frame for the OBSS radio frame being a trigger-based physical packet data unit (PPDU) according to a parameter in a physical layer signal domain;
based on (i) the radio frame being an OBSS radio frame and (ii) the specified type being a trigger-based PPDU, updating a local network allocation vector according to duration information carried in the OBSS radio frame prohibiting the spatial multiplexing, wherein the updated local network allocation vector represents an end time of a transmission opportunity in which the OBSS radio frame prohibiting the spatial multiplexing is located;
in response to determining that the OBSS radio frame prohibits the spatial multiplexing based on a power detection (PD) threshold, configuring the wireless station using a higher overlapping basic service set-power detection (OBSS-PD) threshold to perform spatial multiplexing transmission; and
performing channel access according to the local network allocation vector.