Pre-Emption Indication Mapping for Multi-TRP UE Decoding
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Solution Overview
Problem
Current wireless communication technologies, such as LTE and NR, face challenges in efficiently managing resource pre-emption in multi-TRP communication scenarios, leading to wasted network resources and decoding errors due to the lack of specific pre-emption indications for user equipment (UEs).
Innovation Solution
The implementation of a pre-emption indication mechanism that associates a pre-emption indication field with transmission configuration indicator (TCI) states, demodulation reference signal (DMRS) ports, or layers, allowing UEs to determine and decode communications based on pre-empted resources indicated by the base station, thereby conserving resources and improving decoding performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-emption indication is not specifically associated with TCI states, DMRS ports, or layers, then the system maintains simplicity in resource management, but decoding errors increase and network resources are wasted due to inability to accurately identify pre-empted resources
Solution Approach 1:
The patent segments the pre-emption indication mechanism by associating it with specific TCI states, DMRS ports, or layers rather than applying a universal pre-emption indication to all resources. This segmentation allows the UE to precisely identify which specific resources are pre-empted, improving decoding accuracy for non-pre-empted resources while avoiding the complexity of a fully generalized mechanism.
Solution Approach 2:
The patent applies local quality by making the pre-emption indication specific to particular TCI states, DMRS ports, or layers rather than uniformly applying it across all communication parameters. This localized approach ensures that pre-emption information is provided exactly where needed, improving reliability without requiring the system to manage complexity across all possible resource configurations.
2Productivity
If the UE attempts to decode communications in pre-empted resources, then the UE maintains continuous decoding operations, but network resources are wasted and decoding errors increase
Solution Approach 1:
The patent enables preliminary action by providing the pre-emption indication to the UE before the UE attempts to decode the communication. This allows the UE to proactively identify pre-empted resources and skip decoding operations for those resources, improving overall decoding efficiency and preventing waste of network and UE resources on futile decoding attempts.
Solution Approach 2:
The patent applies discarding and recovering by enabling the UE to discard decoding operations for pre-empted resources identified through the pre-emption indication. This prevents wasting computational resources and energy on decoding attempts that would inevitably fail, while allowing the UE to focus its resources on successfully decoding non-pre-empted communications.
3Ease of manufacture
If general pre-emption indication is used without association to specific TCI states or DMRS ports, then the implementation remains simple, but resource management efficiency decreases leading to wasted transmissions
Solution Approach 1:
The patent applies universality by designing a pre-emption indication mechanism that can be associated with multiple types of communication parameters (TCI states, DMRS ports, layers) through a unified framework. This multi-functional approach allows the same basic mechanism to provide precise resource management across different aspects of the communication, improving resource management efficiency without requiring separate mechanisms for each parameter type.
Data Source
AI summary
In some aspects, a user equipment (UE) may receive a configuration that indicates an association between a pre-emption indication field and at least one of: a set of transmission configuration indicator (TCI) states, a set of demodulation reference signal (DMRS) ports, or a set of layers; receive downlink control information (DCI) that includes a pre-emption indication that is indicated as a set of bits in the pre-emption indication field; determine whether the UE is scheduled to receive a communication in one or more pre-empted resources indicated by the set of bits, via a component carrier associated with the pre-emption indication, and using at least one of: a TCI state included in the set of TCI states, a DMRS port included in the set of DMRS ports, or a layer included in the set of layers; and decode the communication based at least in part on the determination.