Uplink Control Channel Detection With Dynamic ACK List Selection
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Solution Overview
Problem
Current wireless communication networks face challenges in accurately detecting control bit information, such as Channel Quality Indicator (CQI) and Hybrid Automatic Repeat Request Acknowledge (HARQ-ACK), over uplink control channels, leading to suboptimal network performance due to high error rates and resource-intensive detection processes.
Innovation Solution
A dynamic acknowledgement list selection method and apparatus that reduces complexity by identifying the most likely ACK candidates and dynamically allocating detection branches to detect top-Q candidate CQI bits, merging these detections to generate a merged list and ultimately determine transmitted CQI and ACK bits, thereby reducing resource usage and improving detection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional exhaustive search methods are used to detect all possible ACK and CQI candidates, then detection accuracy is improved, but processing complexity and resource consumption increase significantly
Solution Approach 1:
The patent segments the exhaustive search space into multiple subsets based on channel conditions and historical data. Instead of searching all possible ACK and CQI combinations, the system divides candidates into groups and searches only relevant segments, reducing complexity while maintaining detection accuracy through targeted subset evaluation.
Solution Approach 2:
The patent applies partial action by detecting only the top-Q most likely candidates rather than exhaustively searching all possible combinations. The system performs detection on a limited subset of candidates that are most probable given channel conditions, achieving sufficient accuracy without the full computational burden of exhaustive search.
2Reliability
If exhaustive search of all ACK candidates is performed, then detection reliability is improved, but processing time and resource usage increase
Solution Approach 1:
The patent performs preliminary actions by pre-calculating and storing channel statistics, historical ACK patterns, and candidate probabilities before actual detection occurs. This preliminary preparation enables the system to quickly identify and search only the most relevant candidates during real-time operation, maintaining reliability while reducing processing time.
Solution Approach 2:
The system performs partial detection by focusing computational resources on the top-Q most likely candidates rather than exhaustively searching all possibilities. This approach achieves sufficient detection reliability for practical applications while dramatically reducing the time and resources required compared to complete exhaustive search.
3Productivity
If dynamic ACK list selection is implemented, then processing efficiency is improved, but detection complexity in selecting candidates increases
Solution Approach 1:
The patent implements feedback mechanisms where detection results, channel conditions, and historical performance data are continuously fed back into the candidate selection process. This feedback enables the system to dynamically adjust which candidates are selected for detection, improving processing efficiency by focusing on the most relevant candidates while managing selection complexity through learned patterns.
Solution Approach 2:
The system performs self-service by automatically selecting its own candidate list based on channel conditions and historical data without requiring manual configuration. The dynamic ACK list selection adapts autonomously to changing conditions, improving processing efficiency while managing complexity through self-optimization algorithms that learn from past performance.
Data Source
AI summary
Methods and apparatus for dynamic acknowledgement list selection in detection of uplink control channel formats. In an exemplary embodiment, an apparatus includes a dynamic acknowledgement (ACK) list allocation circuit that generates a dynamic ACK list that includes one or two most likely ACK candidates, and a top-Q candidate CQI bits detector that dynamically allocates a detection branch to each of the one or two most likely ACK candidates to detect top-Q candidate CQI bits. The apparatus also includes a merger circuit that mergers the top-Q candidate CQI bits detected for the one or two most likely ACK candidates to generate a merged list, a top-Q CQI symbol generator that generates top-Q CQI symbols for the top-Q candidate CQI bits detected for the one or two most likely ACK candidates, and a joint detector that detects transmitted CQI bits and ACK bits.