Short-Range Node Synchronization for Dense Interference Control
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Solution Overview
Problem
Current short-range communication systems like Wi-Fi and Bluetooth suffer from high demodulation failure rates due to node interference, especially in dense scenarios, necessitating improved time-frequency synchronization between nodes to enhance performance and user experience.
Innovation Solution
A method for establishing time-frequency synchronization between nodes by receiving node information, selecting a synchronization area with the largest number of nodes, and adjusting synchronization priorities to reduce interference and improve system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If nodes communicate asynchronously in dense scenarios, then communication flexibility is maintained, but demodulation failure rate increases due to node interference
Solution Approach 1:
The patent divides the network into multiple synchronization areas, each with its own synchronization source. Nodes within the same synchronization area maintain time-frequency synchronization with each other, while nodes in different areas can operate more independently. This segmentation reduces interference between nodes by organizing them into coordinated groups, thereby lowering demodulation failure rates in dense scenarios while preserving communication flexibility through the modular structure.
2Reliability
If time-frequency synchronization is established between all nodes, then interference between nodes is reduced, but system complexity increases
Solution Approach 1:
Instead of establishing synchronization across the entire network, the patent segments the network into multiple synchronization areas. Each area has its own synchronization source and maintains synchronization only within that area. This reduces system complexity by limiting the synchronization scope to local areas rather than requiring global synchronization, while still achieving interference reduction within each segment.
Solution Approach 2:
The patent introduces synchronization sources as intermediary nodes that coordinate time-frequency synchronization within each synchronization area. These intermediary nodes manage the synchronization process locally, reducing the complexity burden on all nodes while ensuring effective interference reduction through coordinated synchronization within each area.
3Measurement precision
If nodes frequently update synchronization information, then time-frequency synchronization accuracy is improved, but communication overhead increases
Solution Approach 1:
The patent implements periodic updates of synchronization information within each synchronization area, rather than continuous or frequent updates across the entire network. Nodes update their synchronization status periodically based on changes in the synchronization area, which maintains synchronization accuracy while reducing communication overhead by limiting updates to when necessary and confining them to local areas.
Data Source
AI summary
A short-range communication method includes that a first node receives at least one piece of node information from at least one node; and the first node controls the first node to establish time-frequency synchronization with a second node that is in the at least one node and that belongs to a second synchronization area, where node information from the second node includes synchronization information of the second synchronization area, and the synchronization information indicates at least one of a node identifier, a synchronization status, or a synchronization direction between nodes in the second synchronization area.