5G Fronthaul Modulation Compression for Lower Bit Rates
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Solution Overview
Problem
The increasing data transmission capacity in 5G communication systems necessitates a reduction in fronthaul transmission capacity to minimize installation costs and optimize wired network efficiency, particularly in high-frequency bands where existing function split technologies do not adequately define essential control information for modulation compression schemes.
Innovation Solution
Implementing a modulation compression scheme with defined control signals for optimizing fronthaul transmission capacity by compressing and transmitting control information, such as position and power indication, to reduce the bit rate of modulation symbols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If function split technology is applied to base station, then transmission capacity increases, but fronthaul transmission capacity requirement increases
Solution Approach 1:
The patent extracts and removes redundant information from the fronthaul transmission data stream by implementing modulation compression that eliminates repeated modulation symbol sequences. By identifying and compressing repetitive patterns in the modulation symbols transmitted over the fronthaul interface, the system reduces the quantity of data that needs to be transmitted while preserving the essential information needed for signal reconstruction at the remote radio unit.
2Quantity of substance
If modulation compression scheme is applied, then fronthaul bit rate is reduced, but control information definition is incomplete
Solution Approach 1:
The patent segments control information into distinct, well-defined components including position indication information (identifying where compressed modulation symbols are located) and power indication information (specifying amplitude levels). This segmentation allows each control element to be independently defined and processed, making the overall control information structure manageable and implementable despite the complexity of the modulation compression scheme.
3Ease of manufacture
If fronthaul transmission capacity is reduced, then installation cost decreases, but signal quality may deteriorate
Solution Approach 1:
The patent creates simplified copies or representations of the original modulation symbols through compression, where repeated patterns are represented by references to previously transmitted symbols rather than full duplications. This copying approach reduces the amount of data transmitted over the fronthaul while maintaining the ability to reconstruct the original signal quality at the receiving end, thereby reducing installation costs without sacrificing signal integrity.
Data Source
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AI summary
The present disclosure relates to a 5th (5G) generation) or pre-5G communication system for supporting a higher data transmission rate beyond a 4th (4G) generation communication system such as long term evolution (LTE). An operating method of a base station in a wireless communication system according to various embodiments of the present disclosure includes generating at least one compressed symbol based on modulation compression, transmitting to another base station, control information including position indication information which indicates a position of a subcarrier at which a first subcarrier signal is transmitted in a physical resource block (PRB) to which the at least one compressed symbol is mapped, and power indication information for indicating a transmit power of the first subcarrier signal, and transmitting the at least one compressed symbol to the another base station. Thus, transmission capacity may be optimized, and efficient modulation compression is possible.