5G Split Bearer Feedback Management via Master Node Extraction
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Solution Overview
Problem
Conventional multi-point wireless systems face challenges in managing feedback from a large number of transmission points, particularly at higher carrier frequencies, leading to increased radio shadowing and reduced uniform coverage.
Innovation Solution
Implementing a method to determine the need for feedback from slave nodes to a master node, allowing operation in a reduced feedback mode that decreases the amount of feedback provided, thereby improving capacity and managing feedback effectively in multi-point transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full feedback mode is used from all transmission points, then transmission reliability is improved, but signaling overhead increases
Solution Approach 1:
The patent applies partial feedback action by having only the master transmission point provide feedback to the network controller, while slave transmission points operate without providing feedback. This partial feedback approach maintains sufficient transmission reliability for the coordinated multi-point operation while significantly reducing the total signaling overhead compared to full feedback from all transmission points.
Solution Approach 2:
The patent extracts the feedback function from slave transmission points and concentrates it only in the master transmission point. By removing the feedback requirement from slave nodes and keeping only the master node's feedback, the system achieves the necessary reliability through centralized control while minimizing signaling overhead.
2Quantity of substance
If feedback is reduced from slave nodes, then signaling overhead is reduced, but control precision may worsen
Solution Approach 1:
The patent merges the feedback control function into the master transmission point, which already has full system visibility and control responsibilities. By combining the feedback provision role with the master node's existing coordination function, the system maintains control precision through the master node's comprehensive system knowledge while reducing overall signaling overhead.
Solution Approach 2:
The master transmission point performs multiple functions including coordination of slave nodes, system-wide resource management, and feedback provision to the network controller. This multi-functionality allows a single node to maintain system control precision while eliminating the need for separate feedback channels from slave nodes.
Data Source
AI summary
The solution presented herein manages the feedback from multiple transmission points by reducing the amount of feedback provided by one or more slave nodes to a controlling master node. To that end, methods and apparatus are provided that determine whether there is a need for the slave node to provide feedback to the master node. Responsive to this determination, the methods and/or apparatus operate the master and/or slave node in a reduced feedback mode that manages the feedback provided by the slave node to the master node such that an amount of feedback provided by the slave node when operating in the reduced feedback mode is less than an amount of feedback provided by the slave node when operating in a full feedback mode.