US 12,219,637 B1
Method for channel state feedback in a non-simultaneous transmit and receive (NSTR) operation mode
Junbin Chen, Shenzhen (CN)
Assigned to TP-LINK CORPORATION PTE. LTD., Singapore (SG)
Filed by TP-LINK CORPORATION PTE. LTD., Singapore (SG)
Filed on Jan. 11, 2024, as Appl. No. 18/410,610.
Application 18/410,610 is a continuation of application No. 18/491,772, filed on Oct. 22, 2023.
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 76/15 (2018.01); H04W 76/27 (2018.01)
CPC H04W 76/15 (2018.02) [H04W 76/27 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method for channel state feedback implemented in a first communication device, the first communication device being configured with a plurality of links for communicating with a second communication device, the method comprising:
receiving first data over a channel of a first link of the plurality of links;
determining whether a channel of a second link of the plurality of links is idle in a case that no data is received over the channel of the second link and the first link and the second link belong to a non-simultaneous transmit and receive (NSTR) link pair, wherein the first link is different from the second link; and
transmitting a feedback frame over the channel of the first link, wherein the feedback frame comprises a first field indicating whether the channel of the second link is idle, wherein determining whether the channel of the second link is idle comprises:
detecting a medium activity of the channel of the second link; and
determining the channel of the second link to be idle in response to that the medium activity of the channel of the second link is not detected for a duration of a predefined number of backoff slots, and
wherein the medium activity of the channel of the second link is determined to be not detected in a case that there is an in-device coexistence (IDC) interference on the channel of the second link caused by the first data transmission over the channel of the first link, and there is no interference on the channel of the second link caused by a data transmission of a third communication device on a channel which is operated in the same frequency as the channel of the second link.