Downlink Beam Management With CORESET Indexes for Overlap Handling
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Solution Overview
Problem
Wireless devices face challenges in efficiently receiving and decoding overlapping transmissions from base stations due to insufficient capability determination, leading to dropped transmissions, and experience delays in resource switching during bandwidth part switching, resulting in synchronization issues.
Innovation Solution
The implementation of CORESET group indexes allows wireless devices to determine whether to receive and decode overlapping transmissions based on specific indications, and applies rules to select appropriate resources for synchronization during resource switching, enhancing synchronization between base stations and wireless devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wireless device receives and decodes overlapping transmissions without capability determination, then transmission reception efficiency is improved, but transmission reliability deteriorates due to dropped transmissions
Solution Approach 1:
The patent applies parameter changes by introducing CORESET group indexes as a distinguishing parameter for overlapping transmissions. The wireless device uses this parameter to determine whether to receive and decode overlapping transmissions, changing the reception behavior based on the parameter value. This resolves the contradiction by enabling efficient reception of compatible transmissions while reliably dropping conflicting ones.
2Manufacturing precision
If a wireless device waits for MAC CE indication during bandwidth part switching, then resource switching accuracy is improved, but synchronization speed deteriorates due to waiting delays
Solution Approach 1:
The patent applies preliminary action by having the wireless device pre-determine and apply a rule for selecting resources (TCI states, beams) during bandwidth part switching, rather than waiting for MAC CE indication. The device proactively selects resources from the previously active BWP's TCI states, enabling immediate synchronization while maintaining accuracy. This eliminates the waiting delay while preserving resource switching precision.
3Speed
If a wireless device applies rule-based resource selection during bandwidth part switching, then synchronization speed is improved, but resource switching complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the resource selection process into distinct segments: selecting from TCI states of the previously active BWP, applying the selected resource to monitor coresets in the new active BWP, and using this for receiving messages. This structured segmentation simplifies the overall complexity while maintaining fast synchronization, as each segment is a clear, manageable step rather than a complex monolithic process.
Data Source
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AI summary
Wireless communications may comprise communications between a base station and a wireless device. The base station may send and/or schedule one or more transmissions to the wireless device that may overlap in time. The wireless device may receive and/or decode overlapping transmissions that are associated with a different indication and/or the wireless device may not receive at least one of overlapping transmissions that are associated with the same indications.