Uplink Control Information Combining via Resource Element Categorization
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Solution Overview
Problem
In 5G systems, the mixing of reference signals with data and uplink control information (UCI) in uplink transmissions poses challenges for efficient processing, as special processing is required to account for reference signals, even when they are set to zero.
Innovation Solution
A descrambling and combining system that indexes and categorizes uplink control information (UCI) into three categories (data/CSI2, ACK, CSI1) and uses a combiner/extractor to efficiently combine received uplink control information, allowing for efficient processing and enhanced system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If reference signals are mixed with data and UCI in uplink transmissions, then the transmission efficiency is improved, but the processing complexity increases due to special handling requirements
Solution Approach 1:
The patent segments the uplink transmission processing by categorizing resource elements into distinct types (data, UCI, reference signals) using a resource element identifier. This segmentation allows the system to handle different element types through specialized processing paths, reducing overall processing complexity while maintaining transmission efficiency.
Solution Approach 2:
The patent introduces a resource element identifier as an intermediary component that classifies resource elements before they undergo further processing. This intermediary step simplifies the processing architecture by providing clear categorization, enabling efficient handling of mixed transmissions without requiring complex processing logic throughout the system.
2Measurement precision
If special processing is applied to account for reference signals, then the accuracy of data and UCI processing is improved, but the processing time increases
Solution Approach 1:
The patent performs preliminary categorization of resource elements using a resource element identifier before the main processing stages. By pre-classifying resource elements into data, UCI, or reference signal categories, the system prepares the input for subsequent processing stages, ensuring accuracy is maintained while reducing the time required during actual processing operations.
Solution Approach 2:
The patent divides the processing flow into segmented stages based on resource element category. Each stage (data processing, UCI processing, reference signal handling) processes only its designated element type, which improves accuracy through specialized handling while reducing overall processing time by avoiding unnecessary processing steps for each element type.
3Device complexity
If all uplink control information is processed through the same method, then the system simplicity is maintained, but the processing efficiency decreases
Solution Approach 1:
The patent segments UCI processing by category (ACK, CSI1, CSI2, SR) and applies specialized combining methods to each category. This segmentation improves processing efficiency by optimizing each category according to its specific requirements, while the overall system structure remains relatively simple through the use of a centralized resource element identifier for categorization.
Solution Approach 2:
The patent applies different processing qualities and methods to different UCI categories based on their specific requirements. For example, ACK information uses one combining approach while CSI information uses another, allowing each category to be processed with the most appropriate method for its characteristics, thereby improving overall processing efficiency.
Data Source
AI summary
Methods and apparatus for combining received uplink transmissions. In an embodiment, a process for providing wireless data via a communication network is able to determine a type of 5G orthogonal frequency-division multiplexing (OFDM) in accordance with resource elements (REs) of each symbol and configuration parameters. After removing reference signals from the REs to generate a stream of data, demapped data and signal to interference noise radio (SINR) information are generated in accordance with the stream of data. The process is further capable of categorizing REs via an RE identifier to generate RE information including categorizations of REs.