Frequency Domain Resource Allocation for Transform Precoding in MTRP
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Solution Overview
Problem
Existing wireless communication systems do not provide a mechanism to ensure that resources allocated for the first TCI state satisfy the transform precoding threshold, and resources allocated for the second TCI state also satisfy the threshold in multiple transmit receive point deployments.
Innovation Solution
The system includes a method where a user equipment (UE) receives a downlink control information message with a frequency domain resource allocation (FDRA) field, indicating a set of resource blocks (RBs) that satisfy a transform precoding threshold. The UE identifies two sets of RBs, one for each TCI state, ensuring that both sets meet the threshold requirements through extensions or splitting of the indicated RBs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single frequency domain resource allocation is provided in DCI, then resource allocation efficiency is improved, but it cannot ensure that both TCI states receive sufficient resources meeting the transform precoding threshold
Solution Approach 1:
The patent segments the single frequency domain resource allocation into multiple portions, each assigned to different TCI states. The network device provides a first frequency domain resource allocation for a first TCI state and a second frequency domain resource allocation for a second TCI state, ensuring each TCI state receives adequate resources independently while maintaining overall allocation efficiency.
Solution Approach 2:
The patent introduces an additional dimension by providing frequency domain resource allocations not only in the frequency domain but also in the spatial domain through different TCI states. This allows the system to satisfy transform precoding thresholds by utilizing both frequency and spatial dimensions simultaneously.
2Reliability
If frequency resources are allocated for multiple TCI states, then transform precoding reliability is improved, but resource allocation complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring frequency domain resource allocations for different TCI states before actual transmission. The network device determines and assigns specific frequency resources to each TCI state in advance, ensuring that transform precoding thresholds are met without requiring complex real-time allocation decisions.
Solution Approach 2:
The patent enables self-service by allowing each TCI state to independently utilize its allocated frequency resources for transform precoding. The UE automatically applies transform precoding to uplink signals associated with each TCI state using the pre-assigned frequency resources, reducing the need for complex coordination and control signaling.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a downlink control information (DCI) message that includes a frequency domain resource allocation (FDRA). The FDRA may indicate a set of resource blocks (RBs), and the UE uses the indicated set of RBs to identify a first set of RBs for uplink communications using a first transmission configuration indicator (TCI) state and a second set of RBs for uplink communications using a second TCI state, both of which satisfy a threshold for performing transform precoding. The UE may transform precoding the first uplink signaling and the second uplink signaling based on the first and second sets of RBs satisfying the threshold for performing transform precoding.