Dual-Channel Wireless Frame Transmission for Low-Latency Reliability
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Solution Overview
Problem
Latency and packet loss occur in wireless data transmission due to sequential forwarding of empty data frames, leading to service interference and deteriorated user experience in applications like video and gaming.
Innovation Solution
Implementing dual-channel data transmission using separate channels in different frequency bands to send the same data frame simultaneously, ensuring reception through one channel even if the other is blocked, thereby reducing latency and packet loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receive end forwards only sequential data frames to a kernel, then data integrity is maintained, but latency increases and real-time performance deteriorates when retransmission is needed
Solution Approach 1:
The patent segments the data transmission path by introducing a buffer layer between the wireless reception and the kernel. The buffer layer separates sequential processing requirements from real-time delivery requirements, allowing data frames to be forwarded to the kernel as they arrive rather than waiting for sequential completion.
Solution Approach 2:
The patent implements preliminary action by pre-forwarding data frames to the buffer layer upon successful reception, before knowing whether retransmission will be needed. This allows the kernel to process data frames in real-time while the buffer layer handles retransmission supplementation without blocking kernel access.
2Stability of the object's composition
If the receive end waits for retransmitted data frames to supplement empty frames, then data sequence integrity is maintained, but service interference occurs causing frame freezing and artifacts
Solution Approach 1:
The patent introduces a buffer layer as an intermediary between the wireless MAC layer and the kernel. This intermediary absorbs the impact of retransmissions by storing supplemented data frames and forwarding them to the kernel independently, preventing the kernel from waiting for sequential completion and eliminating frame freezing and artifacts.
Solution Approach 2:
The patent applies local quality by allowing different parts of the system to operate with different priorities: the buffer layer maintains strict sequential integrity for retransmitted frames, while the kernel receives frames in real-time order without being blocked by retransmission delays.
3Reliability
If dual-channel transmission is implemented using separate frequency bands, then anti-interference capability improves, but device complexity increases
Solution Approach 1:
The patent implements copying by creating a duplicate transmission path (second channel) that operates in parallel with the original channel. When the first channel experiences interference or failure, the second channel provides a backup copy of the data transmission, ensuring delivery without requiring complex error correction or retransmission protocols.
Data Source
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AI summary
This application provides a data transmission method and an apparatus. The data transmission method is applied to a communications system. An access point in the communications system includes a first communications apparatus and a second communications apparatus, and a station in the communications system includes a third communications apparatus and a fourth communications apparatus. The data transmission method may include: After failing to send a first data frame to the third communications apparatus through a first channel, the first communications apparatus retransmits the first data frame, and sends a same second data frame to the second communications apparatus. The first communications apparatus receives a first notification message sent by the second communications apparatus. The first communications apparatus stops, in response to the first notification message, sending the first data frame. In this application, the same data frame is sent through two channels between the access point and the station, so that an anti-interference capability of wireless transmission is enhanced, a latency and a packet loss are reduced, and then reliability and real-time performance of data transmission on a wireless link are improved.