Audio Link Timing Synchronization to Prevent RF Channel Overlap
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Solution Overview
Problem
In wireless microphones with four transmitters and two receivers, the lack of synchronization between master devices leads to overlapping transmission and reception processes, causing RF interference due to adjacent channel radiation.
Innovation Solution
Establish an information synchronization link between master devices to synchronize their timing, using a synchronization connection event anchor point and interval, and ensure non-overlapping processes by alternating channel usage through odd-even sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If two master devices operate independently without synchronization, then each device can transmit and receive audio data autonomously, but transmission and reception processes overlap causing RF interference
Solution Approach 1:
The patent establishes an information synchronization link between master devices before audio data transmission begins. This synchronization link pre-aligns the timing of transmission and reception processes, ensuring that devices operate in coordinated time slots without overlapping, thereby preventing RF interference while maintaining autonomous transmission capability
Solution Approach 2:
The patent implements periodic synchronization connection events at predetermined intervals between master devices. These periodic events reset and realign the timing synchronization, ensuring continuous coordinated operation throughout the audio transmission process and preventing timing drift that could cause interference
2Quantity of substance
If master devices transmit on adjacent channels simultaneously, then bandwidth is充分利用, but power radiation from transmit channels interferes with adjacent channels
Solution Approach 1:
The patent divides the audio transmission process into segmented time slots through synchronization, where each master device is assigned specific time windows for transmission and reception. This temporal segmentation ensures that adjacent channels do not transmit simultaneously, eliminating power radiation interference while maintaining high bandwidth utilization through efficient time-division multiplexing
3Productivity
If transmission and reception processes overlap, then communication efficiency is high, but timing synchronization accuracy deteriorates
Solution Approach 1:
The patent introduces an information synchronization link as an intermediary mechanism between master devices. This intermediary exchange of timing information allows devices to precisely coordinate their transmission and reception timing without requiring overlapping operations, maintaining timing synchronization accuracy while achieving efficient communication through coordinated time-division operation
Data Source
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AI summary
A link synchronization method, a link synchronization device, an electronic device, and a computer-readable storage medium are provided. The link synchronization method includes establishing an information synchronization link between first and second master devices in response to connection events, acquiring a synchronization connection event anchor point and a synchronization connection event interval of the information synchronization link; and performing link timing synchronization on first audio links corresponding to the first master device and the second audio links corresponding to the second master device according to the synchronization connection event anchor point and the synchronization connection event interval. The first audio links are audio links between the first master device and the first target slave devices, and the second audio links are audio links between the second master device and the second target slave devices. In this way, the audio link timing is synchronized and RF interference is avoided.