Fronthaul Signal Division for Robust Control Transmission
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Solution Overview
Problem
Existing radio communication systems face challenges in improving signal robustness and transmission efficiency in fronthaul communication between master and secondary station devices, as uniform error correction schemes can be inefficient due to differing importance of signal structures, leading to potential loss of control information or excessive redundancy.
Innovation Solution
The signal structure is divided into multiple divisions, with distinct fronthaul communication schemes applied to each, utilizing different error correction codes, coding rates, modulation levels, and optical multiplex wavelengths based on the importance of the signal components, ensuring optimal error tolerance and efficiency for both header and payload information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform error correction schemes are applied to all signal structures in fronthaul communication, then implementation simplicity is maintained, but transmission efficiency deteriorates due to excessive redundancy for critical information and insufficient protection for less critical information
Solution Approach 1:
The signal structure is divided into multiple divisions (e.g., first division for critical control information, second division for less critical data). Each division is independently encoded with appropriate error correction codes and coding rates tailored to its importance level, allowing differentiated protection without uniform complexity across the entire signal
Solution Approach 2:
Different error correction schemes are applied to different parts of the signal based on their local requirements. Critical control information receives stronger error correction with lower coding rates, while less critical information uses higher coding rates for efficiency. This local differentiation optimizes overall transmission efficiency while maintaining necessary reliability
2Reliability
If higher error correction strength is applied to critical control information, then robustness of control signals is improved, but transmission efficiency deteriorates due to increased redundancy
Solution Approach 1:
The signal is segmented into critical control information (first division) and other information (second division). Error correction codes and coding rates are selectively applied to each segment, ensuring strong protection for control information while maintaining efficient transmission for other data, thus balancing robustness and transmission efficiency
Solution Approach 2:
Different coding rates and error correction parameters are changed and applied according to the importance of each signal division. Critical control information uses lower coding rates (higher redundancy) for robustness, while other information uses higher coding rates for efficiency, optimizing the trade-off between reliability and productivity
3Productivity
If lower error correction strength is applied to improve transmission efficiency, then bandwidth utilization is improved, but robustness deteriorates leading to potential loss of critical control information
Solution Approach 1:
By segmenting the signal into divisions with different importance levels, the system can apply strong error correction to critical control information (first division) and weaker correction to other information (second division), ensuring robustness for essential data while maintaining overall transmission efficiency
Solution Approach 2:
Error correction strength is locally adjusted based on the criticality of each signal portion. Critical control information receives high-error-tolerance schemes with appropriate redundancy, while non-critical information uses more efficient but less robust schemes, preventing loss of essential data without unnecessarily reducing overall transmission efficiency
Data Source
AI summary
A transmission device includes a controller configured to apply transmission schemes to respective divisions of a signal to be transmitted to a fronthaul and a transmitter configured to transmit the signal to the fronthaul. The respective divisions include a first division and a second division, and the controller is configured to apply a transmission scheme having higher error tolerance to the first division and a transmission scheme having lower error tolerance to the second division.