UE CSI Reporting Power Optimization via Mobility Adaptation
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Solution Overview
Problem
Current wireless communication systems face challenges in reducing the power consumption associated with channel state information (CSI) reports, particularly in 5G NR technology, where frequent reporting can lead to significant power overhead, especially when downlink data rates are low and uplink transmission requires substantial power.
Innovation Solution
User Equipment (UE) determines parameters indicating channel reception conditions and adjusts CSI reporting schedules or refrains from transmitting reports as needed, transmitting UE-assisted information to the base station to optimize reporting frequency based on mobility states and channel changes, thereby reducing unnecessary power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If frequent CSI reporting is implemented, then channel state information accuracy is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the CSI reporting frequency adjustable rather than fixed. The UE dynamically modifies reporting parameters based on mobility state changes, transitioning between frequent reporting (high accuracy) and reduced reporting (low power consumption) modes as channel conditions change.
Solution Approach 2:
The patent changes the parameter of reporting frequency based on mobility state. When mobility is low, the system reduces reporting frequency to save power. When mobility increases, the system increases reporting frequency to maintain accuracy, thus resolving the contradiction through parameter adaptation.
2Use of energy by moving object
If CSI reporting frequency is reduced, then power consumption is reduced, but channel state information accuracy deteriorates
Solution Approach 1:
The patent uses feedback mechanisms where the UE reports mobility state information to the base station, which then adjusts CSI reporting requirements. This feedback loop allows the system to reduce reporting when accuracy is not critical and increase it when needed, balancing power consumption and accuracy.
Solution Approach 2:
The system dynamically adapts reporting frequency based on real-time mobility conditions. The UE determines mobility state and adjusts reporting parameters accordingly, making the system responsive to changing conditions rather than static.
3Use of energy by moving object
If UE transmits UE-assisted information to adjust reporting, then power saving is achieved, but transmission complexity increases
Solution Approach 1:
The patent extracts only the essential mobility state information from the UE and transmits it to the base station for reporting adjustment. By taking out only the necessary parameters (mobility state indicators) rather than all possible data, the system achieves power saving while minimizing transmission complexity.
Solution Approach 2:
The UE autonomously determines its mobility state and initiates reporting adjustments without requiring complex network coordination. The UE self-evaluates channel conditions and independently decides when to adjust reporting, reducing the complexity of network-side control.
Data Source
AI summary
A method of wireless communication of a UE is provided. The UE determines a first value of one or more parameters indicating a reception condition of a channel from a base station. The UE determines to adjust channel state information (CSI) reporting based on the first value. The UE transmits UE-assisted information to the base station, and the UE-assisted information includes the one or more parameters or an indication of an adjusted reporting schedule of the CSI reporting. Alternatively, the UE refrains from transmitting a CSI report scheduled in accordance with an existing reporting schedule of the CSI reporting.