Local Network Timing Reference Signal Adjustment
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Solution Overview
Problem
Existing wireless telecommunications systems face challenges in providing accurate local network timing reference signals, especially for end-user equipment, due to the need for dedicated timing correction signals and network timing servers, which increase costs and complexity, and can introduce jitter and frequency shifts.
Innovation Solution
A method that extracts a data sequence from a base station, compares it with a local data sequence, and generates a timing misalignment signal to adjust the local network timing reference signal, reducing the need for dedicated timing correction signals and network timing servers, and minimizing jitter by using existing wireless data sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a dedicated network timing server is provided to update local timing signal, then timing accuracy is improved, but system complexity and cost increase
Solution Approach 1:
The end-user equipment performs self-synchronization by extracting data sequences from base station transmissions and comparing them with locally generated sequences. The equipment autonomously generates timing correction signals without requiring a dedicated network timing server, thereby reducing system complexity while maintaining timing accuracy.
Solution Approach 2:
The invention repurposes existing data sequences transmitted by the base station for multiple functions: both for normal communication data transmission and for timing synchronization reference. This eliminates the need for separate dedicated timing correction channels or servers, reducing overall system complexity.
2Measurement precision
If dedicated timing correction signals are transmitted, then timing synchronization is improved, but bandwidth usage increases
Solution Approach 1:
Existing data sequences transmitted over the wireless communication channel serve dual purposes: carrying communication information and providing timing synchronization reference. By comparing the received data sequence with a locally generated matching sequence, the system extracts timing information without requiring additional dedicated timing correction signals, thus avoiding extra bandwidth consumption.
Solution Approach 2:
The timing synchronization function is merged with the existing data transmission function. The same wireless channel and data sequences used for communication are simultaneously utilized for timing reference, combining multiple functions into a single transmission stream and eliminating the need for separate timing correction channels.
3Adaptability or versatility
If IP network is used for timing signal transmission, then flexibility is improved, but jitter and frequency shifts increase
Solution Approach 1:
The end-user equipment autonomously performs timing synchronization by processing base station transmissions directly, eliminating the need to transmit timing signals through the IP network. This removes the source of jitter and frequency shifts introduced by IP network variability while maintaining the flexibility of using existing wireless infrastructure.
Data Source
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AI summary
A method of adjusting a local network timing reference signal generated by end-user wireless telecommunications equipment, a computer program product and end-user wireless telecommunications equipment are disclosed. The method comprises the steps of: extracting a data sequence transmitted wirelessly from a base station, the data sequence being transmitted in synchronisation with a base station network timing reference signal; comparing the data sequence with a matching local data sequence generated in synchronisation with the local network timing reference signal to generate a timing misalignment signal representative of a difference in timing between the base station network timing reference signal and the local network timing reference signal; and utilising the timing misalignment signal to adjust the local network timing reference signal to reduce misalignment with the base station network timing reference signal. Because the data sequence from the base station is synchronised with a network timing reference signal provided by the base station and because the data sequence provided locally is in synchronisation with a network timing reference signal provided locally, it is possible to compare the two data sequences to determine any timing misalignment between the two data sequences and a correction of the local timing signal can be made without the need to send a dedicated timing correction signal.