Uplink Control Information Encoding for Power Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In LTE-A systems with carrier aggregation, ensuring that channel state information (CSI) and hybrid automatic repeat request-acknowledgment information (HARQ-ACK) meet performance requirements while optimizing power utilization is challenging, as existing methods often result in excessive power usage for UCI with low performance goals and limitations in power allocation for user equipment with limited power.
Innovation Solution
Independent encoding of uplink control information (UCI) is performed, with resources allocated based on performance goals and requirements for each type of UCI, allowing for efficient power utilization by avoiding increased transmission power for UCI with high performance requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission power is increased to ensure performance requirements for all UCI, then reliability of UCI transmission is improved, but power consumption increases excessively
Solution Approach 1:
The patent segments UCI into different types (first UCI and second UCI) with different performance requirements. Each type is independently encoded and allocated resources based on its specific needs, rather than treating all UCI uniformly. This allows power to be optimized for each segment according to its reliability requirements.
Solution Approach 2:
Different resource allocation strategies are applied to different UCI types based on their local quality requirements. First UCI with higher performance goals receives more resources and power, while second UCI with lower goals receives fewer resources, achieving local optimization rather than uniform power distribution.
2Ease of operation
If resources are allocated uniformly to all UCI, then ease of resource management is improved, but power utilization efficiency deteriorates
Solution Approach 1:
The patent divides UCI into distinct segments (first UCI and second UCI) that can be managed independently. This segmentation enables differentiated resource allocation where each segment receives resources appropriate to its performance requirements, improving overall power utilization efficiency while maintaining manageable complexity through systematic classification.
Solution Approach 2:
The patent changes the resource allocation parameters dynamically based on UCI type and performance requirements. By adjusting resource allocation parameters (such as number of resource blocks, modulation schemes) according to the specific UCI type being transmitted, the system achieves efficient power utilization without sacrificing ease of management through automated parameter selection.
3Loss of energy
If independent encoding is performed for different UCI types, then power utilization efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing UCI into distinct types that are independently encoded. This segmentation enables the system to apply appropriate encoding complexity only where needed - first UCI with higher performance goals receives more sophisticated encoding treatment, while second UCI uses simpler encoding, thereby improving power efficiency without uniformly increasing device complexity across all processing paths.
Data Source
AI summary
Embodiments of the present invention disclose a method for transmitting control information, a user equipment and a base station. The method includes: obtaining a resource occupied by first UCI, and obtaining a resource occupied by second UCI; performing channel encoding on the first UCI according to the resource occupied by the first UCI to obtain an encoded bit sequence of the first UCI, and performing channel encoding on the second UCI according to the resource occupied by the second UCI to obtain an encoded bit sequence of the second UCI; mapping the encoded bit sequence of the first UCI and the encoded bit sequence of the second UCI to a physical uplink channel, so as to transmit to a base station.