Dynamic CRS Power Configuration for Wireless Reliability
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently configuring cell-specific reference signals (CRS) and control channels, particularly in dynamically adapting to varying channel qualities of user equipment (UEs), which affects transmission reliability and resource utilization.
Innovation Solution
A method and apparatus for identifying UEs with specific channel qualities and dynamically configuring CRS and control channels within transmission time intervals (TTIs), adjusting transmission power and resource allocation based on channel conditions to ensure reliable communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CRS transmission power is increased to improve coverage for UEs with poor channel quality, then transmission reliability improves, but system power consumption and interference to other UEs increases
Solution Approach 1:
The patent applies local quality by configuring different CRS power levels for different UEs based on their individual channel conditions. UEs with poor channel quality receive higher power CRS transmissions, while UEs with good channel quality receive lower power transmissions, thereby optimizing power consumption and reducing interference to other UEs while maintaining transmission reliability for each specific UE.
Solution Approach 2:
The patent dynamically changes the CRS transmission power parameter based on UE channel quality measurements. The base station adjusts the power level of CRS transmissions adaptively according to the measured channel conditions of each UE, allowing the system to optimize between reliability and power consumption by modifying the power parameter in response to changing channel conditions.
2Reliability
If CRS transmission power is increased to improve coverage for UEs with poor channel quality, then transmission reliability improves, but interference to other UEs increases
Solution Approach 1:
The patent applies local quality by configuring different CRS power levels for different UEs based on their individual channel conditions. UEs with poor channel quality receive higher power CRS transmissions, while UEs with good channel quality receive lower power transmissions, thereby optimizing power consumption and reducing interference to other UEs while maintaining transmission reliability for each specific UE.
Solution Approach 2:
The patent dynamically changes the CRS transmission power parameter based on UE channel quality measurements. The base station adjusts the power level of CRS transmissions adaptively according to the measured channel conditions of each UE, allowing the system to optimize between reliability and power consumption by modifying the power parameter in response to changing channel conditions.
3Reliability
If dynamic CRS configuration is implemented to adapt to varying channel qualities, then transmission reliability improves, but system complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where UEs report their channel quality measurements back to the base station. Based on this feedback, the base station dynamically adjusts the CRS configuration and power levels for each UE. This feedback loop enables the system to adapt to varying channel conditions and maintain high transmission reliability while managing complexity through structured feedback processing.
Solution Approach 2:
The patent makes the CRS configuration dynamic by allowing the base station to adjust CRS parameters such as power level and resource allocation based on real-time channel conditions. This dynamic adaptation enables the system to respond to changing wireless environments, improving reliability for UEs with poor channel quality while efficiently utilizing system resources.
Data Source
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AI summary
Efficient cell-specific reference signal (CRS) and control channel configurations may be established dynamically based on channel conditions for one or more user equipment (UE) that may be served by a transmission. A base station may configure a CRS for a transmission time interval (TTI) based at least in part on a channel quality of one or more UEs that are to receive transmissions during the TTI. A number of downlink symbols at the beginning of the TTI may be used for CRS transmissions, and UEs with better channel quality may receive CRS transmissions and other control information in a first symbol, while UEs with a poorer channel quality may receive higher power CRS transmissions in the first symbol and the other control information is transmitted in a subsequent symbol.