Fronthaul C-Plane Messaging for Modulation Compression Transfer
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Solution Overview
Problem
The challenge in wireless communication systems is the efficient transmission of modulation compression information between the distributed unit (DU) and the radio unit (RU) through the fronthaul interface, which is not adequately addressed by existing technologies.
Innovation Solution
The proposed solution involves generating and transmitting control plane messages with section extension information including modulation compression details, such as flags for constellation shifts and scale information, between the DU and RU through the fronthaul interface, utilizing transceivers and processors to manage the exchange of subblock and physical resource block data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If modulation compression information is transmitted through the fronthaul interface between DU and RU, then the efficiency of wireless communication is improved, but the complexity of the fronthaul interface increases
Solution Approach 1:
The patent segments the base station into two functional units: Distributed Unit (DU) and Radio Unit (RU), connected via fronthaul interface. The modulation compression information transmission is specifically implemented between these segmented units, allowing the complexity to be distributed while maintaining improved wireless communication efficiency through specialized information exchange.
Solution Approach 2:
The fronthaul interface acts as an intermediary between the DU and RU, carrying control plane messages that include modulation compression information. This intermediary structure enables efficient information transfer while managing the complexity by providing a standardized communication channel with defined protocols for transmitting constellation shift flags and scale information.
2Measurement precision
If section extension information including modulation compression details is included in control plane messages, then the accuracy of modulation compression information transfer is improved, but the quantity of data transmitted increases
Solution Approach 1:
The patent extracts only the essential modulation compression information elements needed for accurate transmission, specifically the constellation shift flag and scale information, and places them within section extension information in control plane messages. This selective extraction maintains accuracy while minimizing the data volume by including only critical parameters rather than complete modulation details.
Solution Approach 2:
The section extension information structure applies local quality by providing detailed modulation compression information (constellation shift flags, scale information) only where needed in specific sections of the control plane messages, rather than uniformly across all transmissions. This allows accurate information transfer for subblocks requiring modulation compression while reducing overall data volume.
Data Source
AI summary
A method performed by a distributed unit (DU) in a wireless communication system is provided. The method includes identifying a subblock in one section. The method includes generating a control plane (C-plane) message including section extension information including modulation compression information corresponding to the subblock. The method includes transmitting, to a radio unit (RU), the C-plane message through a fronthaul interface.