Separate Uplink Resources for ACK/NACK and CSI with Beam Sweeping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing uplink resources for ACK/NACK feedback reports and CSI reports, particularly in ensuring reliable and timely transmission, especially in scenarios requiring strict latency and reliability, such as ultra-reliability low latency communications (URLLC) and industrial IoT (IIoT) applications.
Innovation Solution
The implementation of separate uplink resources for ACK/NACK feedback reports and CSI reports, with distinct beam sweep patterns for each, allows for improved reliability and flexibility in resource allocation, using a more robust beam sweep pattern for ACK/NACK feedback reports and a less robust pattern for CSI reports to conserve resources, while ensuring reliable communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate uplink resources are allocated for ACK/NACK feedback reports and CSI reports with distinct beam sweep patterns, then reliability of uplink communications is improved, but device complexity and resource management complexity increase
Solution Approach 1:
The patent segments uplink resources by creating separate resource allocations for ACK/NACK feedback reports and CSI reports, each with its own beam sweep pattern. This segmentation allows independent optimization of each report type's transmission reliability without interfering with the other, directly resolving the contradiction by improving reliability through dedicated resources while managing complexity through structured separation.
Solution Approach 2:
The patent applies local quality by assigning different beam sweep patterns specifically tailored to each report type's requirements. ACK/NACK feedback reports receive a first beam sweep pattern optimized for low-latency acknowledgment, while CSI reports receive a second beam sweep pattern optimized for channel state information accuracy. This localized optimization improves overall reliability while maintaining manageable complexity through targeted resource allocation.
2Reliability
If a more robust beam sweep pattern is used for ACK/NACK feedback reports, then transmission reliability is improved, but resource consumption increases
Solution Approach 1:
The patent segments resource allocation by dedicating specific uplink resources and beam sweep patterns to ACK/NACK feedback reports versus CSI reports. This allows the system to concentrate robust transmission resources only where critical for reliability (ACK/NACK), while using more moderate resources for less time-critical reports (CSI), thereby improving transmission reliability for essential feedback while controlling overall resource consumption.
Solution Approach 2:
The patent changes transmission parameters dynamically by applying different beam sweep patterns based on report type. The first beam sweep pattern for ACK/NACK feedback uses parameters optimized for reliability and low latency, while the second beam sweep pattern for CSI reports uses parameters that balance resource efficiency with adequate performance, thus achieving high reliability where needed without excessive resource consumption across all transmissions.
3Loss of time
If separate uplink resources are allocated for different report types, then latency requirements are met, but system complexity increases
Solution Approach 1:
The patent segments uplink transmission resources into dedicated channels for ACK/NACK feedback reports and CSI reports, each with assigned beam sweep patterns. This segmentation enables parallel processing and independent scheduling of different report types, allowing the system to meet strict latency requirements for time-critical ACK/NACK feedback while managing system complexity through structured, rule-based resource allocation rather than complex dynamic scheduling.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive downlink control information (DCI) that indicates a first uplink resource for an acknowledgement or negative acknowledgment feedback report and a second uplink resource for a channel state information report. The UE may receive, via the DCI, an indication of a first beam sweep pattern associated with the first uplink resource and a second beam sweep pattern associated with the second uplink resource. Numerous other aspects are provided.