Shared Channel RS Bundling Under Preemption Indication
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Solution Overview
Problem
In wireless communication systems, the issue arises when preemption occurs during time-domain reference signal bundling, causing loss of phase coherence due to non-contiguous transmit durations, especially in scenarios where higher priority communications preempt lower priority ones, such as URLLC preempting eMBB, leading to challenges in efficiently handling shared channel resources.
Innovation Solution
A UE receives a preemption indication and selectively performs time-domain RS bundling based on this indication, adjusting bundling strategies to accommodate preempted resources, ensuring coherent signal processing even in the presence of preemption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If time-domain reference signal bundling is performed for shared channel communications, then phase coherence and signal quality are improved, but preemption of higher priority communications (e.g., URLLC) cannot occur efficiently
Solution Approach 1:
The patent makes the reference signal bundling configuration dynamic by introducing a preemption indication that can toggle bundling on or off based on whether preemption is detected. When preemption is indicated, bundling is disabled for the affected communications; when no preemption occurs, bundling is enabled. This dynamic adjustment resolves the contradiction by allowing the system to adapt between maintaining phase coherence and enabling preemption based on real-time conditions.
2Productivity
If preemption indication is implemented to allow higher priority communications, then resource utilization and responsiveness are improved, but phase coherence in time-domain bundling is lost
Solution Approach 1:
The patent applies local quality by selectively disabling reference signal bundling only in the specific time resources where preemption occurs, rather than globally disabling it for all communications. The preemption indication identifies specific resource blocks or time slots affected by preemption, and bundling is adjusted locally for those portions while maintaining bundling for unaffected communications. This resolves the contradiction by preserving phase coherence where possible while enabling preemption where needed.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a preemption indication indicating that resources of at least one shared channel communication among one or more shared channel communications of a shared channel are to be preempted, where the one or more shared channel communications are to be time-domain reference signal (RS) bundled based at least in part on an RS associated with the shared channel. The UE may selectively perform time-domain RS bundling of the one or more shared channel communications based at least in part on the preemption indication. Numerous other aspects are provided.