Sub-Symbol CSI Processing for High-Frequency Wireless Reporting
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Solution Overview
Problem
Conventional CSI reporting procedures fail to meet the requirements for high-frequency wireless communication systems, particularly beyond 52.6 GHz, and industrial internet of things (IIoT) and ultra-reliable low-latency communication (URLLC) services, necessitating improved CSI processing and reporting methods.
Innovation Solution
Enhancements in CSI processing and reporting are implemented, including sub-symbol level CPU availability checks, multi-PUSCH scheduling, and CSI multiplexing, to optimize CPU utilization and reduce latency for high-frequency operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional CSI reporting procedures are used, then device complexity is reduced, but reporting speed and accuracy deteriorate, failing to meet high-frequency and low-latency service requirements
Solution Approach 1:
The patent segments CSI processing into multiple parallel processing units that can independently handle different CSI calculation tasks simultaneously. This segmentation enables faster overall processing by dividing the computational workload across multiple units, directly addressing the need for higher CSI reporting speed while managing complexity through structured parallelism
Solution Approach 2:
The patent implements preliminary action by pre-calculating and storing channel state information during periods when processing units are available, so that CSI reports can be generated rapidly when needed. This approach prepares processing results in advance, reducing latency for time-critical high-frequency communications without requiring continuous high-complexity processing
2Loss of time
If conventional symbol-level CPU availability checks are used, then processing overhead is reduced, but latency increases due to waiting for full symbol duration
Solution Approach 1:
The patent transitions from checking CPU availability only at symbol-level boundaries to checking availability at sub-symbol time points. This dimensional refinement in time checking allows the system to detect when processing units become available much sooner within a symbol period, dramatically reducing the waiting time and thus the CSI processing latency
Solution Approach 2:
The patent implements dynamic CPU availability checking that adapts to the actual processing state of computing units rather than following a fixed symbol-based schedule. This dynamic approach allows the system to flexibly determine when processors are free, optimizing the balance between processing overhead and latency reduction based on real-time system state
Data Source
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AI summary
Apparatuses, methods, and systems are disclosed for channel state information processing and reporting. One method (700) includes determining (705), at a user equipment ("UE"), an availability of channel state information ("CSI") processing units on a sub-symbol level where a duration of the sub-symbol being less than a symbol duration that corresponds to a subcarrier spacing of an uplink ("UL") channel for transmission of at least one corresponding CSI report. The method (700) includes processing (710) the at least one corresponding CSI report on the determined available CSI processing units in response to a number of CSI processing units becoming available at the sub-symbol level being equal to or greater than a number of CSI processing units needed for processing the at least one corresponding CSI report.