Wireless Base Station Clock Correction Using Multiple Time Servers
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Solution Overview
Problem
Wireless base stations face accuracy issues in maintaining a stable oscillation frequency due to potential malfunctions in external time information notification servers like NTP servers, which can lead to incorrect clock signal control.
Innovation Solution
A wireless base station connected to multiple time information notification servers, capable of selecting and correcting its internal clock based on the most accurate time information from these servers, thereby minimizing the impact of server failures and ensuring high accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless base station uses a single time information notification server for clock correction, then the device complexity is reduced, but the reliability deteriorates because the base station cannot identify server malfunctions and mistakenly controls the clock signal
Solution Approach 1:
The patent divides the time information source into multiple independent notification servers instead of relying on a single server. Each server provides time information independently, allowing the base station to compare and select the most accurate time source, thereby improving reliability without significantly increasing overall system complexity
Solution Approach 2:
The patent implements a feedback mechanism where the base station compares time information from multiple servers, detects discrepancies, and uses this feedback to identify malfunctioning servers. This feedback loop enables the system to adapt to server failures and maintain accurate clock control by selecting reliable time sources
2Reliability
If the wireless base station connects to multiple time information notification servers, then the reliability improves by preventing mistaken clock control, but the device complexity increases due to additional server management and comparison mechanisms
Solution Approach 1:
The patent extracts the time information comparison and selection function as a separate mechanism from the clock control function. By isolating the comparison logic, the system can evaluate multiple servers without complicating the core clock control process, managing complexity through functional separation
Solution Approach 2:
The patent uses multiple copies of time information from different servers instead of a single source. By comparing these copies, the system can identify discrepancies and select the accurate time source, improving reliability while keeping the processing mechanism relatively simple through parallel information acquisition
Data Source
AI summary
A wireless base station that performs wireless communication with a mobile terminal is connected to a plurality of time information notification servers. The wireless base station selects any of a plurality of pieces of time information notified from a plurality of time information notification servers, respectively, and corrects an internal clock based on the selected piece of time information. This can keep the internal clock of the wireless base station highly accurate.