Rx Resource Tuning for Downlink Reception and CLI Measurement
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Solution Overview
Problem
Conventional wireless devices prioritize cross-link interference (CLI) measurements over downlink traffic reception, leading to degraded downlink traffic performance and throughput due to the inability to simultaneously measure CLI and receive downlink signals.
Innovation Solution
Wireless devices and base stations dynamically manage Rx resource tuning to prioritize downlink traffic reception over CLI measurements by adjusting Rx resource configurations based on timing thresholds and capability reports, allowing simultaneous or non-overlapping scheduling of downlink traffic and CLI measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wireless devices prioritize CLI measurements over downlink traffic reception, then CLI measurement accuracy is improved, but downlink traffic throughput deteriorates
Solution Approach 1:
The patent implements dynamic Rx resource tuning where the wireless device can switch between first Rx resource tuning (for downlink traffic) and second Rx resource tuning (for CLI measurements) based on real-time scheduling conditions. The device determines whether to perform CLI measurements by evaluating timing relationships between PDCCH traffic and CLI measurement opportunities, dynamically adjusting measurement behavior to avoid degrading downlink traffic throughput while maintaining measurement capability when conditions permit.
2Measurement precision
If wireless devices perform CLI measurements during downlink traffic reception, then measurement opportunities are utilized, but downlink traffic performance deteriorates due to resource conflicts
Solution Approach 1:
The patent employs preliminary evaluation of timing relationships between PDCCH traffic and CLI measurement opportunities. The wireless device determines in advance whether a CLI measurement opportunity conflicts with downlink traffic by checking if the time period between PDCCH traffic and CLI measurement opportunity exceeds a threshold duration. Only when sufficient time is available does the device switch to second Rx resource tuning for CLI measurements, preventing resource conflicts before they occur.
3Adaptability or versatility
If wireless devices switch Rx resource tuning frequently between downlink traffic and CLI measurements, then both functions can be performed, but device complexity increases
Solution Approach 1:
The patent changes the timing parameter (threshold duration) as the decision criterion for switching Rx resource tuning. The wireless device compares the actual time period between PDCCH traffic and CLI measurement opportunity against this threshold to determine whether to perform measurements. This parameter-based decision mechanism simplifies the control logic compared to complex scheduling algorithms, reducing device complexity while maintaining adaptability.
Data Source
AI summary
In methods and devices configured to perform the methods for managing downlink traffic reception and cross-link interference (CLI), a wireless device may receive from a base station physical downlink control channel (PDCCH) traffic using a first receive (Rx) resource tuning of an Rx resource, determine whether a time period between an end of the PDCCH traffic and a beginning of a CLI measurement opportunity exceeds a threshold duration for tuning the Rx resource to a second Rx resource tuning, and may receive downlink traffic using the first Rx resource tuning in response to determining that the time period between the end of the PDCCH traffic and the beginning of the CLI measurement opportunity is less than or equal to the threshold duration.