Autonomous Parameter-Varying Communication Synchronization
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Solution Overview
Problem
Traditional communication systems using local clocks for synchronization face challenges in maintaining accurate synchronization over long communication times, especially when parameter-varying durations are short and synchronization requirements are high, leading to increased packet loss and potential communication interruptions.
Innovation Solution
An autonomous parameter-varying communication synchronization method based on an external clock, where two communication parties synchronize their local clocks using a shared external clock signal, establish a two-way communication link, perform parameter-varying transmissions and receptions, detect interference, and correct their clocks in real-time to maintain synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If local clocks are used for synchronization, then the system can operate autonomously without external clock sources, but synchronization errors accumulate over time leading to increased packet loss and communication interruptions
Solution Approach 1:
An external clock source is introduced as an intermediary to synchronize the local clocks of transmitting and receiving devices. The external clock acts as a reference that both devices use to align their timing, preventing error accumulation that would otherwise occur with autonomous local clocks alone.
Solution Approach 2:
The system continuously monitors synchronization status by comparing timestamps from the external clock with local device timestamps. When synchronization deviations are detected, the system provides feedback to adjust timing parameters, ensuring continuous synchronization accuracy over long communication periods.
2Adaptability or versatility
If parameter-varying communication is implemented to improve anti-interference performance, then the system can adapt to complex electromagnetic environments, but synchronization requirements increase making the system more sensitive to timing errors
Solution Approach 1:
The system performs preliminary synchronization with the external clock before engaging in parameter-varying communication. This pre-synchronization ensures that both transmitting and receiving devices are properly aligned in time before the more sensitive parameter-varying operations begin, reducing susceptibility to timing errors.
3Object-affected harmful factors
If cognitive frequency-hopping technology is used to avoid interference, then the anti-interference ability improves, but the system can only target single signal feature parameters at frequency points and cannot meet high synchronization requirements
Solution Approach 1:
The system extends frequency-hopping technology to vary multiple signal parameters simultaneously (frequency, time, amplitude) rather than just frequency alone. This multi-parameter variation capability is coordinated by the external clock synchronization mechanism, allowing the system to maintain both interference avoidance and high synchronization precision.
Data Source
AI summary
The present invention are an autonomous parameter change communication synchronization method and system based on an external clock. The method comprises: firstly, two communication parties acquiring the same external clock source signal, and each correcting a local time according to the external clock source signal; secondly, a communication caller autonomously establishing a bidirectional communication link with a communication responder by means of a call response mechanism; then the two communication parties entering an autonomous parameter change communication stage, and changing respective system sending and receiving parameters according to synchronous clock; and at the same time, the two communication parties each performing comparison to determine a time difference value at a parameter change moment in real time, and each correcting a local clock when the difference value is greater than a preset threshold value, thereby maintaining the consistency of the local clocks of the two parties.