PUSCH Transform Precoding Switching for Repetition and TBoMS
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Solution Overview
Problem
Existing wireless communication systems lack clear guidelines for a user equipment's (UE) behavior regarding transform precoding on a physical uplink shared channel (PUSCH) during PUSCH repetition or transmission block processing over multiple slots (TBoMS), leading to inefficiencies in waveform selection and power management.
Innovation Solution
The UE and network node implement a processor to receive signaling for switching between transform precoding states, determine the effectiveness of the signaling, and adjust PUSCH transmissions accordingly, based on specific conditions and parameters such as DMRS scrambling IDs, MCS values, and frequency hopping flags.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transform precoding state switching signaling is implemented for PUSCH repetition or TBoMS, then adaptability and waveform selection flexibility are improved, but device complexity and control overhead increase
Solution Approach 1:
The patent applies parameter changes by dynamically switching transform precoding states (enabled/disabled) based on received signaling. The UE changes the transform precoding parameter for PUSCH transmissions in response to DCI or MAC CE signaling, allowing flexible waveform selection (DFT-s-OFDM or CP-OFDM) while maintaining systematic control through standardized signaling mechanisms.
2Productivity
If transform precoding state switching is applied to all PUSCH transmissions after first appearance, then communication performance and throughput are improved, but power consumption increases
Solution Approach 1:
The patent implements dynamics by enabling dynamic switching of transform precoding states based on real-time signaling reception. The UE can adaptively change waveform types (DFT-s-OFDM with transform precoding enabled vs. CP-OFDM with transform precoding disabled) according to channel conditions and network requirements, optimizing both throughput and power consumption dynamically rather than using static configurations.
3Speed
If signaling takes effect from the first PUSCH transmission after appearance, then responsiveness and real-time performance are improved, but reliability and transmission stability deteriorate
Solution Approach 1:
The patent applies preliminary action by preparing the UE to switch transform precoding states in advance based on received signaling before actual PUSCH transmissions occur. The UE processes DCI or MAC CE signaling to determine the appropriate transform precoding state before the scheduled PUSCH transmission, ensuring both rapid responsiveness and reliable execution by pre-configuring the transmission parameters.
Data Source
AI summary
Embodiments of the present disclosure relate to methods and apparatuses for transform precoding on a physical uplink shared channel (PUSCH). According to some embodiments of the disclosure, a user equipment (UE) may include a processor and a transceiver coupled to the processor; and the processor is configured to: receive signaling indicating switching from a transform precoding state to another transform precoding state, wherein the signaling would take effect for one or more physical uplink shared channel (PUSCH) transmissions of a PUSCH repetition or a transmission block processing over multiple slots (TBoMS), wherein the one or more PUSCH transmissions of the PUSCH repetition or the TBoMS are after a PUSCH transmission of the PUSCH repetition or the TBoMS firstly appeared in a time domain; determine whether the signaling takes effect or not for the one or more PUSCH transmissions of the PUSCH repetition or the TBoMS; and transmit the one or more PUSCH transmissions of the PUSCH repetition or the TBoMS in accordance with the first transform precoding state or the second transform precoding state based at least in part on the determination.