CPRI Frame Format Optimization for 5G Data Transmission
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Solution Overview
Problem
The CPRI protocol's frame format results in low transmission efficiency due to a high bandwidth occupancy by control information, limiting the effective data transmission capacity in 5G communication scenarios.
Innovation Solution
The method involves carrying control information or signaling information in a control word of a basic frame and transmitting data in bits other than the control word, optimizing the frame format to reduce the bandwidth occupied by the control word, thereby increasing the data transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control information is carried in a separate first word of the basic frame according to CPRI protocol, then control signaling is ensured, but transmission efficiency deteriorates due to bandwidth occupancy
Solution Approach 1:
The patent merges the control word and data words by embedding control information into specific bit positions within data words. Instead of allocating a separate first word for control information, the control bits are integrated into the existing data word structure, allowing simultaneous transmission of control and data without dedicating separate bandwidth resources.
Solution Approach 2:
The data words in the optimized frame structure serve dual purposes: they carry both user data and control information. By utilizing specific bit positions within the data words for control information, the same transmission resources perform multiple functions, eliminating the need for separate control word allocations and improving overall spectral efficiency.
2Quantity of substance
If line bit rate is increased to support higher data volume, then data capacity is improved, but processing complexity and hardware requirements worsen
Solution Approach 1:
The patent changes the frame structure parameter by optimizing the allocation of bits within words. By reorganizing how control and data information are packed into the frame structure, the system achieves higher effective data capacity without changing the fundamental line bit rate, thereby avoiding the need for increased processing clock speeds and complex hardware upgrades.
Data Source
AI summary
A data transmission method and apparatus, a storage medium, and an electronic apparatus. The method includes control information or signaling information between a building baseband unit (BBU) and a radio remote unit (RRU) in a control word of a basic frame, where bits corresponding to the control word are part of bits of a first word (S302); and transmitting data in bits other than the control word in the first word of the basic frame and words other than the first word (S304).