UE Transform Precoding Control via RRC and DCI Parameters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems, such as those in the LTE and New Radio (NR) standards, face limitations in flexibility and efficiency, particularly in managing resources for PUSCH transmissions, which can impact overall communication performance.
Innovation Solution
The implementation of a method where user equipment (UE) and base stations use RRC parameters to enable or disable transform precoding for PUSCH transmissions, based on specific indicator fields in DCI formats, allowing for flexible resource allocation and efficient use of OFDM symbols and subcarriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transform precoding is enabled for PUSCH transmissions, then spectral efficiency and data rate are improved, but device complexity and processing overhead increase
Solution Approach 1:
The patent implements dynamic switching between transform precoding and DFT-s-OFDM based on RRC parameters and DCI indicator fields. The UE can adaptively select the appropriate transmission mode (transform precoding enabled or disabled) according to current channel conditions and service requirements, allowing spectral efficiency to be improved when conditions permit while reducing complexity when conditions do not
Solution Approach 2:
The patent changes the operational parameters of the transmission system by introducing RRC parameters (transformPrecoder, msg3-transformPrecoder) and DCI indicator fields that control whether transform precoding is applied. This parameter-based control mechanism allows the system to switch between different transmission modes, optimizing spectral efficiency when transform precoding is enabled and reducing processing overhead when it is disabled
2Adaptability or versatility
If multiple RRC parameters and DCI fields are used to control transform precoding, then adaptability and flexibility are improved, but device complexity and signaling overhead increase
Solution Approach 1:
The patent segments the control mechanism into multiple independent components: RRC parameters for semi-static configuration (transformPrecoder, msg3-transformPrecoder) and DCI indicator fields for dynamic switching. This segmentation allows flexibility to be achieved through layered control while managing complexity by separating static configuration from dynamic adjustments
Solution Approach 2:
The patent performs preliminary configuration through RRC parameters before actual PUSCH transmissions occur. The transformPrecoder and msg3-transformPrecoder parameters are configured in advance to establish baseline behavior, reducing the need for frequent dynamic signaling and thereby managing overhead while maintaining flexibility
Data Source
AI summary
A user equipment (UE) is described. The UE may comprise high-layer processing circuitry configured to acquire at least a first RRC parameter for indicating whether or not a transform precoder is enabled and a second RRC parameter for indicating whether or not a transform precoding indicator field is included in a DCI format, reception circuitry configured to receive the DCI format for scheduling of a PUSCH and transmission circuitry configured to transmit the PUSCH.