Multi-TRP Transmission Hypothesis Selection With Adjusted CSI Reporting
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Solution Overview
Problem
Existing CSI reporting mechanisms in multi-TRP communication networks are biased towards selecting multi-TRP transmission, leading to higher throughputs and reliability for individual terminal devices but increasing overall interference and complexity, without considering system-wide performance.
Innovation Solution
Implementing an adjustment term in the CSI reporting mechanism to penalize multi-TRP transmission hypotheses, ensuring they are triggered only when beneficial for system performance, thereby balancing individual and network-wide benefits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-TRP transmission is selected to improve individual terminal device throughput and reliability, then system-wide interference and complexity increase
Solution Approach 1:
The patent modifies the CSI reporting mechanism by introducing an adjustment term that changes the selection criteria parameter. Instead of purely maximizing individual throughput, the selection now incorporates a penalty factor that adjusts the overall metric to account for system-wide interference, thereby changing the decision parameter from purely local optimization to a balanced metric.
Solution Approach 2:
The patent implements a feedback mechanism where the network node receives CSI reports that have been adjusted to reflect system-wide conditions. This feedback loop allows the system to adapt transmission decisions based on both individual terminal needs and overall network state, preventing excessive multi-TRP transmissions that would cause harmful interference.
2Productivity
If multi-TRP transmission is selected to improve individual terminal device throughput, then resource management complexity increases
Solution Approach 1:
The patent simplifies the resource management complexity by changing the selection parameter from evaluating multiple complex system-wide factors to using an adjusted CSI metric that inherently balances throughput and interference. This parameter transformation reduces the computational burden on the terminal device while maintaining optimal transmission decisions.
3Object-generated harmful factors
If adjustment term is introduced to penalize multi-TRP transmission, then unnecessary multi-TRP transmissions are reduced, but system performance optimization becomes more complex
Solution Approach 1:
The patent segments the CSI reporting mechanism into distinct components: the original CSI measurement and the adjustment term. This segmentation allows the system to maintain the existing CSI framework while adding a separate penalty component, making the overall mechanism more manageable and easier to implement without completely redesigning the system.
Data Source
AI summary
There is provided mechanisms for selecting a transmission hypothesis. A method is performed by a terminal device. The method comprises receiving reference signals from at least two transmission and reception points (TRPs). The method comprises selecting, from signal quality measurements on the reference signals, a transmission 5 hypothesis from alternative transmission hypotheses pertaining to which one or more of the TRPs that is to transmit data to the terminal device. Which of the transmission hypotheses to select is affected by an adjustment term. The method comprises reporting an indication of the selected transmission hypothesis to at least one of the at least two TRPs.