Patent ID: 11909537
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 4:
5. A data transmission method, wherein an access point (AP) comprises a first communications apparatus and a second communications apparatus, a first channel is established between the first communications apparatus and a third communications apparatus of a station (STA), a second channel is established between the second communications apparatus and a fourth communications apparatus of the STA, and the first channel and the second channel are channels in different frequency bands; and the method comprises:
receiving, by the second communications apparatus, a second data frame, wherein the second data frame is sent by the first communications apparatus when the first communications apparatus retransmits a first data frame to the third communications apparatus through the first channel, and the first data frame and the second data frame are a same data frame;
sending, by the second communications apparatus, the second data frame to the fourth communications apparatus through the second channel;
receiving, by the second communications apparatus, a first acknowledgment message from the fourth communications apparatus through the second channel, wherein the first acknowledgment message indicates that the fourth communications apparatus receives the second data frame through the second channel; and
sending, by the second communications apparatus, a first notification message to the first communications apparatus in response to the first acknowledgment message, wherein the first notification message is used to instruct the first communications apparatus to stop sending the first data frame.